PDF malware analysis — malicious · f40a80f24f624719

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: 7086be60cebf4b353c952f854a87dc42 SHA-1: 0f722ef421ec32d3be225f5e38f4a2bb227c3a54 SHA-256: f40a80f24f62471912026e766279b5b4115c90c07bc1d30ee366c6d8f3baff00

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by heuristic firings for PDF_JAVASCRIPT and PDF_JS. ClamAV detections (Win.Trojan.Agent-36166) confirm the malicious nature of the file. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute malicious code, although the exact payload could not be determined from the provided evidence.

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` `1baae52bb7ddda9d2d95202b75df5e5a00820889c4c235ac5aa0893581ae628d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75192 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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