Malicious PDF / .PHP — malware analysis report

Static analysis result for SHA-256 c8c946f56743d2fc…

MALICIOUS

PDF / .PHP

15.0 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 841b25b73ceb7b4feb5873bca3528f4a SHA-1: fcec9056e932f8ea761906dd265e490727e47cc0 SHA-256: c8c946f56743d2fc616b0ab4c33fd448aa167162979ad0364394f51f3a9f6cd6
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm its malicious nature. The JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery. The presence of JavaScript actions and embedded JS streams points towards an attempt to exploit vulnerabilities or deliver malicious content upon opening.

Heuristics 3

  • ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36166
  • JavaScript action low 1 related finding 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
8ec03aec8d7a03f25326f0a0d807fa56eae2aa443e2be3bf5e8358c1e30d74fa		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 83625 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

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