Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c6d8ae0e3323e2…

MALICIOUS

PDF

4.7 KB Created: 2002-03-27 12:02:13 Authoring application: Aladdin Ghostscript 5.10
MD5: 28488723ec873038d47890ac0ba37a67 SHA-1: 308ac6b00b1f10b61a5cff11c8345e7077861b94 SHA-256: 30c6d8ae0e3323e2a1cd919c374a3edc589ce37103d9aa10eb65c97d69ec774d
180 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, which is triggered by the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This JavaScript is likely responsible for downloading and executing a second-stage payload. The ClamAV detection of Win.Trojan.Agent-36171 further supports the malicious nature of the file.

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)
  • ClamAV: Win.Trojan.Agent-36171 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36171
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
a1a7d0f54533fb3a1d82a8220f57bd6619cc83df534b95cce0772708c9dc31df		 pdf-javascript-stream PDF /JS object 12 at offset 0xCDF 1676 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 eval/decoder/string-building token(s).

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