PDF malware analysis — malicious · 7cd6f3777e6bf76e

MALICIOUS

PDF

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

MD5: 9c5c0ffbff407299200bc2fca281980a SHA-1: 0bd90297339667c170747566bf99a6fd50ad0e25 SHA-256: 7cd6f3777e6bf76ea73cec863ed5557f1c5db996747ac2ad44b2d8264fb76816

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics. ClamAV detections 'Win.Trojan.Agent-36166' on both the main file and an extracted artifact strongly suggest malicious intent. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, as is common with this type of PDF-based malware delivery. The lack of readable document body text prevents a more specific determination of the lure.

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` `d7849c5f511cbb97e5d9726d3dfa4c99b0b4ffe6abf720dc1b94f88f61b2ec61`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	84156 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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