PDF malware analysis — malicious · 23b6c5c52a0e3fa0

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: 0edcb46361368ab1c73dedbeadd87fbc SHA-1: d446225be7b6e64a53a76f501d39ef04d543800c SHA-256: 23b6c5c52a0e3fa06581be1ea5d0c2ae56c8e2b0fd68f218c8580f7de1065c4d

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, which is often used to download and execute further malicious content. The presence of JavaScript actions and embedded JS streams strongly suggests an attempt to exploit vulnerabilities or deliver a secondary payload. The document body itself 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` `02e52f11082073ebb0739fb8b276ed0cfaf7062dc95c365e7b2d2d36410e23d7`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74605 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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