PDF malware analysis — malicious · 488e74bea2392337

MALICIOUS

PDF

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

MD5: 5041c5258c3ef1fe3bf491c580734c62 SHA-1: 89cb1bc590d31c0979487e009cf6cfbac3242c37 SHA-256: 488e74bea23923373690a5240b101a639cbeb2dddce3413df71be8b4daae040a

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is a PDF document with embedded JavaScript, identified by heuristics as a potential attack vector. ClamAV signatures indicate it is a known trojan, specifically 'Win.Trojan.Agent-36166'. The embedded JavaScript, while large, is the primary mechanism for delivering the malicious payload, likely involving downloading and executing further stages.

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` `7bf45a56905d29a3792d0c6d338f069dcc0fb23375fc4c5df5c633bf60813571`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75178 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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