PDF malware analysis — malicious · 26f71b3966e65094

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: 7a62f5b2ac291a1cc07ae704656773f8 SHA-1: 5c89e7d0524b1cb1688bc2d5a1dfd4565af2c4d0 SHA-256: 26f71b3966e650942ae55df6b8d21a14bbcc58f7c58772e714599a436eaba5a4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The file is a PDF containing embedded JavaScript, indicated by multiple heuristic firings. ClamAV detections for 'Win.Trojan.Agent-36166' on both the main file and an extracted artifact strongly suggest malicious intent. The embedded JavaScript is likely responsible for executing the payload, although its specific actions are not detailed in the provided evidence. 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` `b317857464082f9fdbbc75af66b465c51a6ecfc111d85b9435f67c40d54cf476`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75118 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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