Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9130025797933e4…

MALICIOUS

PDF

5.0 KB Created: 9163-51-32 75:68:99 -07:51 Authoring application: Acrobat Editor 8.0 (via Adobe Acrobat 8.1.0)
MD5: a9fc748dedfc4aeba811c64b6cfa2c7a SHA-1: f76b0215e125e102b66f0ed7ecbd8b57669cac68 SHA-256: e9130025797933e45ef64d274564688f5e09c3a2c1747fb56baaf70b74b90dbd
118 Risk Score

Malware Insights

The PDF file contains embedded JavaScript and triggers the CVE-2007-5659 vulnerability via the Collab.collectEmailInfo method. This indicates the file is designed to exploit a known flaw in Adobe Reader to execute arbitrary code. No specific malware family could be identified, but the exploit is the primary attack vector.

Heuristics 6

  • Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659
    PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0028_000.js
5cce592539dc1bd8417466eb7811640dc06210410030ec7e0098c571064fe62d		 pdf-javascript-stream PDF /JS object 28 at offset 0x518 2204 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).

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