PDF malware analysis — malicious · 8dbd5204b6de63de

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: 3a78de13a170c2cbc8079008836bab91 SHA-1: 90330a2b8123631b08b2f50cca93f668f3250f03 SHA-256: 8dbd5204b6de63debd54832a41a6bf0cd3c78141c954253b9c2d2ee62aa7e67b

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript, which is often used to download and execute further malicious content. The heuristics indicate the presence of JavaScript actions and embedded JS streams within the PDF structure. The document body was truncated and 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` `a4a74f0887a6bb99669d183ba6fd2c8562281d7ccef1ca2a8c625c4c1e9513f0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74522 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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