Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09f2b424e19053a…

MALICIOUS

PDF

5.7 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)
MD5: bec39b84fa0b4328f72bfca5179d943b SHA-1: d1d7dc2feff375aa253cf256ef191b2cefb35a7c SHA-256: e09f2b424e19053a2c2a20c4f9f366f318a4d4755e48fb8aa75ec5ccad7101c7
298 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript that exploits CVE-2009-0927 and CVE-2007-5659, both known vulnerabilities in Adobe Reader. The JavaScript is obfuscated but ultimately uses eval() to execute malicious code. ClamAV detections further confirm its malicious nature. The primary attack vector involves leveraging these specific PDF exploits to achieve arbitrary code execution.

Heuristics 8

  • 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)
  • ClamAV: Pdf.Exploit.Agent-35931 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35931
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
8dca015e5b78a0e7d771bf06aa21949723dfc48933f7253000a4bc9392dec1d3
pdf-javascript-stream PDF /JS object 6 at offset 0x131C 839 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).
legacy_pdfkit_stage_000.js
a1a7779c49111b0ce9cd54addc34b156c4613f92d49295935da0443eccbad1df
deobfuscated-js repeated-marker hex decoded JavaScript at offset 0x16E 4843 bytes
Detection
ClamAV: Js.Exploit.Shellcode-18
Obfuscation or payload: likely
Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).