Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c72d028910e06d…

MALICIOUS

PDF

2.6 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)
MD5: 6ce6f9b5f38463fd50fb1aa965b86c80 SHA-1: 380635ba31583d21afd5847ef09e4c7b2c28bdbb SHA-256: 47c72d028910e06d26b220ff591a6d149a745f04d141204ddfb464141b27b8be
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. This JavaScript is likely designed to download and execute a secondary payload. The presence of obfuscated JavaScript and the specific exploit used indicate a malicious intent to compromise the user's system.

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)
  • 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)
  • Suspicious extracted artifact high 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.
  • 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0001_000.js
b75608d557107ef8a2d071aa3218fb1d7891ba52e0bbbd9516248b21111bb241
pdf-javascript-stream PDF /JS object 1 at offset 0xF 34 bytes
javascript_obj0013_001.js
d25bc4c6aca7eafe7bb82d8766322872626752991abd453c5a68a747f4902e90
pdf-javascript-stream PDF /JS object 13 at offset 0x379 2411 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).