PDF malware analysis — malicious · 9c2b7b83e7eb7a53

MALICIOUS

PDF

5.2 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob

MD5: b1f254637128dcaaaf82ae45518086ab SHA-1: ef920a2ac8529bff68fc13c5d34160465a7dabfa SHA-256: 9c2b7b83e7eb7a53ef1e30286dafd9a062f0fa558b4cb49b19fa3f6f6fd6393e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains a critical vulnerability exploit for CVE-2010-0188, targeting Adobe Reader. A decompressed JavaScript payload was extracted from a PDF stream, indicating the execution of malicious code. This payload is likely responsible for further stages of the attack, such as downloading additional malware or establishing a connection to a command and control server.

Heuristics 6

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_001_off00000324.js` `593729ef5f6109247e4ac17a50f679496f7645be37f40675143dc53682004a8d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x324	52142 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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