Malicious PDF — malware analysis report

Static analysis result for SHA-256 478f966b7d6037ab…

MALICIOUS

PDF

11.9 KB Created: 2009-11-07 19:42:92 Authoring application: PDF Library 6.2.9 (via PDF Library 9.6.7)
MD5: 22b1f3be77606424db15be39da5da9b7 SHA-1: 0d371f4bb085dffed63a56ea976d0fc406e75d20 SHA-256: 478f966b7d6037ab40a12231841ab0de437c1a519e4c23a05859baea8e7f3142
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link

The PDF file exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These exploits are triggered by embedded JavaScript, which is obfuscated and uses ASCIIHexDecode filters. The primary intent appears to be the execution of arbitrary code via these vulnerabilities, likely leading to a second-stage payload download and execution.

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.

FilenameKindSourceSize
javascript_obj0007_000.js
70ba1650e9f1e98ac598a2367d729d510f054b9dd75e05c0a2141e11cabf63cb
pdf-javascript-stream PDF /JS object 7 at offset 0x268 38099 bytes
legacy_pdfkit_stage_000.js
a34c443af680c36ef67a78e6476161750b2d4ea4f62856e68717dc5231c63f68
deobfuscated-js numeric array subtract-key decoded JavaScript at offset 0x268 9874 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).