Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce6580386573bf3…

MALICIOUS

PDF

5.3 KB Created: 2012-06-11 17:19:01 Authoring application: %
MD5: 4f4ff03c5bf71d866c75e9202cf6b59b SHA-1: 77382e9529fd4c2fef20017dbb54b3c98233c825 SHA-256: 2ce6580386573bf3caa16e110cbe598660663d58f91ab689faea954c397ab73e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains an embedded JavaScript payload that is likely responsible for exploiting CVE-2010-0188 in Adobe Reader. The heuristic firings confirm the presence of an exploit targeting this CVE and an embedded script payload. The extracted JavaScript file, stream_002_off00000313.js, is the primary artifact of the malicious activity. The exact behavior of the script could not be fully determined due to its size and potential obfuscation, but its presence within an exploit-laden PDF strongly suggests it's designed to download and execute a second-stage payload.

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.
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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.

FilenameKindSourceSize
stream_002_off00000313.js
f46cea8f3220df74a20904bee9d7b4a20e24d30a0c58e981363cd401905468d6
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x313 88369 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 long base64-like blob(s).