Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85e2f7dd45795e0…

MALICIOUS

PDF

2.5 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)
MD5: e8e5f2e07d173a5c5b923c6f4d81bbbe SHA-1: 0d5280ef5f63d05252aaf095b5262675682474ad SHA-256: e85e2f7dd45795e0c7ae08c4911be5a2eb69b4f2bf95bd506370cb19fe81e288
220 Risk Score

Malware Insights

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

This PDF document triggers an embedded JavaScript action upon opening, exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. The embedded JavaScript stream, named 'javascript_obj0013_001.js', is obfuscated but indicates malicious intent. The primary goal appears to be the execution of a secondary payload, as suggested by the critical heuristic firings and the nature of the embedded script.

Heuristics 7

  • 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-34667 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-34667
  • OpenAction trigger high PDF_OPENACTION
    PDF has an /OpenAction — code runs automatically when opened
  • 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_obj0013_001.js
dbd7ca291176d9d6409e9013200edd589a48bfba537a1d22982ac69182a990aa
pdf-javascript-stream PDF /JS object 13 at offset 0x368 2135 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).