Malicious PDF — malware analysis report

Static analysis result for SHA-256 180be7d20462bd0c…

MALICIOUS

PDF

14.7 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 7aaa8f849db64d56627feb1adefb1480 SHA-1: 522db041106b0ee5693f9cc05af6e466c9c736f0 SHA-256: 180be7d20462bd0cd416b0cc60d8faca1386d4f3e180c2f682bd9d63886617c0
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, which is heavily obfuscated but indicative of malicious intent. ClamAV detected the file as Win.Trojan.Agent-36166, and ML classifiers also flagged it as malicious. The JavaScript likely attempts to download and execute a second-stage payload, a common technique for this type of threat.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36166
  • 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.
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
09dce899fbb747501222c0441b1d3469460edab81b635e817d5d524b3effa631		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 76133 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.