AcroPDF[.]dll | Triage

Sharing

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General

Target

AcroPDF.dll
Size

494KB
MD5

2d82ca8e405b0639b03f214efc2bc231
SHA1

50e735f3498d428f9964fc451973830896b15379
SHA256

4295c6ab7f24bd1b2e7859834245bb185e2b98de8bb328627f3a7d48d1988e64
SHA512

81d6792e9550390b5847996c549e2645d029c936406b4e2ed338d1f008e7f94836d37e20717038d8ad0abfbafe3ea805b3867a30f2993c7d1aa844b24d782935
SSDEEP

3072:ogJpd/lBgmXMOvsgrEnXAJzMI4Vgp50tsxDyyOdjVOxbEHjY4kv:znDy/IsgrQAKxVa0i+EWFkv

Score

1^/10

Malware Config

Signatures

Files

AcroPDF.dll
.dll regsvr32 windows x86

68a32e0140720412be228c2c1bae85c3

Code Sign

06:89:83:64:2c:95:3e:46:f7:bd:ce:41:43:f1:33:c1
Certificate

Issuer

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

10/03/2017, 00:00

Not After

15/03/2019, 12:00

Subject

SERIALNUMBER=2748129,CN=Adobe Systems\, Incorporated,OU=Acrobat DC,O=Adobe Systems\, Incorporated,POSTALCODE=95110,STREET=345 Park Ave,L=San Jose,ST=California,C=US,1.3.6.1.4.1.311.60.2.1.2=#130844656c6177617265,1.3.6.1.4.1.311.60.2.1.3=#13025553,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

Issuer

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

18/04/2012, 12:00

Not After

18/04/2027, 12:00

Subject

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

Issuer

CN=VeriSign Universal Root Certification Authority,OU=VeriSign Trust Network+OU=(c) 2008 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

12/01/2016, 00:00

Not After

11/01/2031, 23:59

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

54:58:f2:aa:d7:41:d6:44:bc:84:a9:7b:a0:96:52:e6
Certificate

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

02/01/2017, 00:00

Not After

01/04/2028, 23:59

Subject

CN=Symantec SHA256 TimeStamping Signer - G2,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

f6:29:92:d4:0f:84:88:f6:06:27:37:e4:f2:fb:f0:d1:da:3c:d0:53:c3:1a:00:a8:b9:18:bf:dd:34:d5:c5:4a
Signer

Actual PE Digest

f6:29:92:d4:0f:84:88:f6:06:27:37:e4:f2:fb:f0:d1:da:3c:d0:53:c3:1a:00:a8:b9:18:bf:dd:34:d5:c5:4a

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

SERIALNUMBER=2748129,CN=Adobe Systems\, Incorporated,OU=Acrobat DC,O=Adobe Systems\, Incorporated,POSTALCODE=95110,STREET=345 Park Ave,L=San Jose,ST=California,C=US,1.3.6.1.4.1.311.60.2.1.2=#130844656c6177617265,1.3.6.1.4.1.311.60.2.1.3=#13025553,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

04/12/2018, 19:01
Valid: true

Chain 1

SERIALNUMBER=2748129,CN=Adobe Systems\, Incorporated,OU=Acrobat DC,O=Adobe Systems\, Incorporated,POSTALCODE=95110,STREET=345 Park Ave,L=San Jose,ST=California,C=US,1.3.6.1.4.1.311.60.2.1.2=#130844656c6177617265,1.3.6.1.4.1.311.60.2.1.3=#13025553,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

LoadLibraryExA
LoadResource
SizeofResource
lstrcmpiA
FindResourceA
MultiByteToWideChar
WideCharToMultiByte
IsDBCSLeadByte
GetThreadLocale
SetThreadLocale
SetLastError
GetCurrentThreadId
LockResource
FindResourceW
MulDiv
HeapAlloc
HeapReAlloc
HeapFree
HeapSize
GetProcessHeap
GetUserDefaultLangID
GetModuleHandleW
GetConsoleMode
GetConsoleCP
FlushFileBuffers
SetStdHandle
GetStringTypeW
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineW
GetCommandLineA
GetCPInfo
GetOEMCP
GetACP
IsValidCodePage
FindNextFileW
FindFirstFileExW
FindClose
GetModuleHandleA
GetModuleFileNameA
FreeLibrary
DeleteCriticalSection
InitializeCriticalSectionEx
LeaveCriticalSection
EnterCriticalSection
RaiseException
DecodePointer
EncodePointer
GetModuleHandleExW
GetProcAddress
lstrlenW
GetTickCount
Sleep
OpenMutexW
SetNamedPipeHandleState
GetLastError
CloseHandle
WriteFile
ReadFile
CreateFileW
GetVolumeInformationW
SetFilePointerEx
LCMapStringW
GetFileType
GetStdHandle
GetModuleFileNameW
ExitProcess
VirtualQuery
VirtualProtect
GetSystemInfo
LoadLibraryExW
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InterlockedFlushSList
RtlUnwind
VirtualFree
VirtualAlloc
FlushInstructionCache
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
InitializeCriticalSectionAndSpinCount
CreateEventW
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
InitializeSListHead
OutputDebugStringW
InterlockedPopEntrySList
InterlockedPushEntrySList
WriteConsoleW

user32

ReleaseDC
CharNextA
CharNextW
DefWindowProcA
CallWindowProcA
UnregisterClassA
RegisterClassExA
LoadCursorA
SetWindowLongA
GetWindowLongA
MessageBoxA
GetClientRect
EndPaint
BeginPaint
GetDC
GetFocus
DestroyWindow
IsChild
CreateWindowExA
GetClassInfoExA

gdi32

SetWindowOrgEx
SetViewportOrgEx
LPtoDP
TextOutA
SetTextAlign
SetMapMode
SaveDC
RestoreDC
GetDeviceCaps
DeleteDC
CreateDCA

advapi32

RegSetValueExA
RegOpenKeyExW
RegQueryInfoKeyW
RegQueryInfoKeyA
RegEnumKeyExA
RegDeleteValueA
RegDeleteKeyA
RegCreateKeyExA
RegQueryValueExA
RegOpenKeyExA
RegCloseKey

ole32

CoCreateInstance
StringFromGUID2
CoTaskMemAlloc
CoTaskMemRealloc
CoTaskMemFree
CoFreeUnusedLibrariesEx

oleaut32

RegisterTypeLi
SysAllocString
SysFreeString
VariantClear
VariantInit
SysAllocStringLen
SysStringLen
UnRegisterTypeLi
LoadTypeLi
VarUI4FromStr

shlwapi

PathAddExtensionA
PathAppendA
PathRemoveFileSpecA

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllInstall
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 116KB - Virtual size: 116KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 40KB - Virtual size: 39KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 315KB - Virtual size: 315KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

68a32e0140720412be228c2c1bae85c3

Code Sign

06:89:83:64:2c:95:3e:46:f7:bd:ce:41:43:f1:33:c1Certificate

Extended Key Usages

Key Usages

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5cCertificate

Extended Key Usages

Key Usages

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12Certificate

Extended Key Usages

Key Usages

54:58:f2:aa:d7:41:d6:44:bc:84:a9:7b:a0:96:52:e6Certificate

Extended Key Usages

Key Usages

f6:29:92:d4:0f:84:88:f6:06:27:37:e4:f2:fb:f0:d1:da:3c:d0:53:c3:1a:00:a8:b9:18:bf:dd:34:d5:c5:4aSigner

Signature Validations

Verification

04/12/2018, 19:01 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

advapi32

ole32

oleaut32

shlwapi

Exports

Exports

Sections

.text Size: 116KB - Virtual size: 116KB

.rdata Size: 40KB - Virtual size: 39KB

.data Size: 6KB - Virtual size: 8KB

.rsrc Size: 315KB - Virtual size: 315KB

.reloc Size: 8KB - Virtual size: 7KB

06:89:83:64:2c:95:3e:46:f7:bd:ce:41:43:f1:33:c1
Certificate

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

54:58:f2:aa:d7:41:d6:44:bc:84:a9:7b:a0:96:52:e6
Certificate

f6:29:92:d4:0f:84:88:f6:06:27:37:e4:f2:fb:f0:d1:da:3c:d0:53:c3:1a:00:a8:b9:18:bf:dd:34:d5:c5:4a
Signer

04/12/2018, 19:01
Valid: true

.text
Size: 116KB - Virtual size: 116KB

.rdata
Size: 40KB - Virtual size: 39KB

.data
Size: 6KB - Virtual size: 8KB

.rsrc
Size: 315KB - Virtual size: 315KB

.reloc
Size: 8KB - Virtual size: 7KB