Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ceae50eeea58bb…

MALICIOUS

PDF

14.4 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 30c940653c9ca70633d1a909d3f0c1b2 SHA-1: 88d259ff102d556f8cfbc0a3a90734892f5ba1eb SHA-256: 36ceae50eeea58bb65d6c52b413c2df3ac14123b9685f71f6ac8363606ba07db
136 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm its malicious nature. The embedded JavaScript is likely responsible for executing the malicious payload, contributing to the overall attack pattern of exploiting PDF vulnerabilities.

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
ec941194998faec7a67ed623469a5dac98931db346fec6b09916caf1922927cc
pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 74573 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely