PDF malware analysis — malicious · 8e8d15aedd007c27

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: a8377541443fbb234586ad4d9ad4ba64 SHA-1: f8ce98d91824c9d4e6fe58c6cda6b54f0bd3a681 SHA-256: 8e8d15aedd007c277c2a4ba37a801e8a48b8e8ef8afa44353ccd3b6c7e28d4be

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. Static analysis also identified embedded JavaScript, which is often used to exploit vulnerabilities or download secondary payloads. The presence of JavaScript actions and streams strongly suggests an attempt to execute code upon opening the PDF.

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` `087b752910273eb6d8a4d318b0c2beb46e51e8309973607f6d622ee5a6fc34cd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75082 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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