PDF malware analysis — malicious · 3d15f2821dc25430

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: 5bdcaf0258a0c431e1832b940aa56040 SHA-1: 1c91debba1b7b0c30c458786cf5d0015483110ff SHA-256: 3d15f2821dc2543000d565ac5b21460f7ea83b21254ae72beefbaf43c3f1c7a9

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to execute code. The presence of JavaScript actions and embedded JS streams strongly suggests the file is designed to download and execute a secondary payload, a common tactic for malware delivery.

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.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `e8c8c652e8f9c23851d8c91f8d542c9119d9ae002f015cbb105ba4db40af525a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74922 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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