PDF malware analysis — malicious · 316c2f565ff59543

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: 8086b16b28ed0dc4e4d85c5f80862a2b SHA-1: b9241870ada72ee4ac8b039243ececf67c1c4225 SHA-256: 316c2f565ff59543c87b7ffc519771580a5b720eb8360537d73cdb83769e61ea

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166, indicating a known malicious signature. Heuristics indicate the presence of JavaScript actions and an embedded JS stream, suggesting the file is designed to execute code. The JavaScript likely attempts to download and execute a second-stage payload, though the exact functionality is obscured by its size and potential obfuscation. The document body is unreadable, providing no further context.

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` `01acb6af86b47507751bd6bec1367aeeb60d3927a0ad115511da3088b91fa11a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76062 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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