PDF malware analysis — malicious · f03f3320035b3630

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: b195ab8584d018ed31af9f448e178ef1 SHA-1: bd5965a43338a1305553935e46b30df98c65dd6c SHA-256: f03f3320035b363028b221a57d0616f72272fd0fdf10b1f38b5667022f3532e7

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The sample is a PDF file that contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections confirm this is a malicious agent. The embedded JavaScript is the primary mechanism for exploitation, likely to download and execute a secondary payload, as suggested by the critical ClamAV detection of 'Win.Trojan.Agent-36166'.

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` `b3da5703d0c05bf239667be91554650cc3a7732ada8a2089a999a92aedfe7263`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74779 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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