PDF malware analysis — malicious · 53bce0dc34e9ce24

MALICIOUS

PDF

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

MD5: 50dcb1a3e327bc9753e9fa7103e34efd SHA-1: 06f61ddf8c5818a6d26c7039045917d6cadac662 SHA-256: 53bce0dc34e9ce24907bdcc2e723809271da321e25cfa257c1a9ec8d0da7f4e4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166, indicating a known malicious signature. Heuristics indicate the presence of embedded JavaScript, which is often used to download and execute further malicious content. The document body is unreadable, but the combination of ClamAV detection and embedded JavaScript strongly suggests a malicious intent, likely involving a downloader or trojan.

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` `c31103d04188cd1570f6081165537f1f859bafdf19be8729f1ff2ac37942dce6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74528 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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