PDF malware analysis — malicious · 25deb6e48f53ac00

MALICIOUS

PDF

14.6 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 764ab014e37574035b2495f3b4798c02 SHA-1: c80150bb70414ea340118f193793c2648f958767 SHA-256: 25deb6e48f53ac007ccb6a6c7b0dfa5bba37f8b86a65985002ebeb5633b638c6

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is identified as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript, indicating an attempt to execute malicious code. The JavaScript stream is large, suggesting it may be obfuscated or contain significant functionality, likely for downloading and executing further payloads. The presence of PDF-specific JavaScript actions further supports this conclusion.

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` `0a549c2b529dace8cea849c69b670d04e7f0ad7dfdd5a16fcf4a9d2f663ca2fc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75006 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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