Win.Trojan.Agent-36166 — PDF malware analysis

Static analysis result for SHA-256 a57157107e3fa9a5…

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: d0371b382f157cedc5bab64d94de56fe SHA-1: e46019da53ab3ce70757ff2ff9a7b4a4ae5b21ef SHA-256: a57157107e3fa9a5993d5f383eef1446edc34a5ba96ae4960905789572925139
136 Risk Score

Malware Insights

Win.Trojan.Agent-36166 · confidence 95%

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 confirm this file is malicious, specifically identifying it as Win.Trojan.Agent-36166. The embedded JavaScript is likely responsible for executing the malicious payload, leading to the Trojan infection.

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
253fecbb8088090bf2037fe26c7d08acc19782406a11daeafbdbb08b8b22a943		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 74336 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

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