PDF malware analysis — malicious · 3d6a915b608d7bd2

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: d318c9294c754f32981f62f776782ee1 SHA-1: f340891147259b7e5a30e95e7046e0922347bfaa SHA-256: 3d6a915b608d7bd2e43523970f7e5ca8a01d09b6afbd15c08b411255d3ce8adb

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. Static analysis also identified embedded JavaScript, suggesting an attempt to execute malicious code. The JavaScript stream is large and obfuscated, making its exact function difficult to determine, but it is likely responsible for the malicious behavior.

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` `17c602284ac3c13356f12df7a9815a0a58a5acee2d872b636206944ff3b1d895`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75244 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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