PDF malware analysis — malicious · e8f079153d79df79

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: 414b0bbb006a41a1f1471dfe85c75db4 SHA-1: 03e855a7e971e6def10886ed2fef1c7f098066c5 SHA-256: e8f079153d79df7937e0ed304682762355202769b3151124bf953ed8167fdb20

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although the exact mechanism is obscured by obfuscation. The presence of JavaScript actions and streams points towards T1059.001 and T1059.005 as the primary execution vectors.

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` `2f4ca4489bbbc7284cf989e7e6a5c746e31dc52425d368598535ea202d0d329e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74610 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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