Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c0c01f22eac4b65…

MALICIOUS

PDF

3.2 KB Created: 2010-02-11 11:59:15 Authoring application: zt21ac0
MD5: 8c834b1cbc2c4367a256d8da3324ec84 SHA-1: 86d04e76947116a96d09ed2af959250f48f8bd56 SHA-256: 4c0c01f22eac4b65011c9eae6a2effb3b67af919638cb127bb10410344386de4
198 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) related to PDF reader functions like media playback and email information collection. The heuristics indicate that this JavaScript is obfuscated and likely intended to download and execute a second-stage payload, as suggested by the extracted artifact 'legacy_pdfkit_stage_000.js'.

Heuristics 6

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
  • 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)
  • 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_obj0028_000.js
c47c83b42acae05407e74acb2b959ea1925aaa12e1a68794732b96afecbc6246
pdf-javascript-stream PDF /JS object 28 at offset 0x217 949 bytes
legacy_pdfkit_stage_000.js
0751614157273680bdeda291522f02d180c0edc22118c6b70c17f0c5df8f7682
deobfuscated-js repeated-marker hex decoded JavaScript at offset 0x45A 2635 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s).