PDF malware analysis — malicious · ff753c417cd17f62

MALICIOUS

PDF

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

MD5: 385cf78ba063230e8fcee7a895f23294 SHA-1: f0229defedc21e1e112027f474e695a68715d1c9 SHA-256: ff753c417cd17f627c204369b61e9d1e5710ec2602e3018b6d094652f32681cc

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is a PDF document that contains embedded JavaScript. Heuristics indicate the presence of JavaScript actions and embedded JS streams, and ClamAV detected it as Win.Trojan.Agent-36166. The JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common technique for malware delivery.

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` `a936bc4f056d42dbbcf9b8a0e9c8a94641fbe5e27a773e275df18ec0f0bc2438`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	83771 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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