PDF malware analysis — malicious · 43fc24cf804bf729

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: 80f4c4497760b7ddcaa3c2412027159f SHA-1: 0de0a928d504ac8671969e7afb6a09e2e691ddb1 SHA-256: 43fc24cf804bf729aaf2e6c8009a5621644fdcd0ac984e29f268e514e3cc6059

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, identified by heuristic firings and ClamAV detections. ClamAV signatures indicate the presence of 'Win.Trojan.Agent-36166', suggesting the JavaScript is likely used to download and execute a malicious payload. The document body is unreadable, but the presence of JavaScript and the ClamAV detection strongly indicate malicious intent.

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` `53048f67cfd89a1cba7b586342ff35ab9ddb86550f1f42a28fd1efc4df34e2dc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74239 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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