PDF malware analysis — malicious · d10a30cc613b3197

MALICIOUS

PDF

12.2 KB Created: 2009-11-09 19:47:02 Authoring application: PDF Library 8.7.1 (via PDF Library 9.8.10)

MD5: 29676f907c0fb4ba28ef45f216fa5c40 SHA-1: c4ea56c15c6afd3a48c7f47c736f08f1c561cae1 SHA-256: d10a30cc613b31975fa2fb96444c3b292d426eaa46fb0b6c3f800b1a6b217c0a

220 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript that exploits multiple critical vulnerabilities in Adobe Acrobat, specifically CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These exploits are triggered by the use of functions like Collab.getIcon, Collab.collectEmailInfo, and util.printf within obfuscated JavaScript streams. The primary purpose of these exploits is to download and execute a second-stage payload, as indicated by the extracted artifact 'legacy_pdfkit_stage_000.js'.

Heuristics 7

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
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. (identified after JavaScript deobfuscation)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a9734a6bbc8bf09268b69d6134a8d182bae38d840c3e602f7088320b4c71f465`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37720 bytes
`legacy_pdfkit_stage_000.js` `c120b7bfd0da333f371746903b950f7c4e07ede224936f6420d2cb84ec3b3110`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x268	9868 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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