Malicious PDF — malware analysis report

Static analysis result for SHA-256 d440ae7db7432dfb…

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: 70047b7194c4088e79727e6d1160ae18 SHA-1: 2de22a5b7dcf70f143a4c4d8c8ba5d791a4cc18e SHA-256: d440ae7db7432dfbede1a7b9b52a9ce18d744e21f16a3f5a747351d0c0d2103e
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections of 'Win.Trojan.Agent-36166' on both the main file and an extracted artifact strongly suggest malicious intent. The embedded JavaScript is likely responsible for executing the payload associated with this detection.

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
e718d1ef905e3a2a095177bbba5fdfbf0ba214657b871bb817887cf4fd8c4fd7		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 74934 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

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