PDF malware analysis — malicious · e701ed4264c461b0

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: 65cc8d694b627b945c1a550d2f1d2f1b SHA-1: 5d80bfe6cc51a1cf6c2d01ef92fe0e1af70cc3c3 SHA-256: e701ed4264c461b02d835c076f0fdb9e04920ba87986cdf24d5bfa60fee83382

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, a common technique for delivering malicious payloads. Heuristic analysis identified JavaScript actions and streams within the PDF. ClamAV detections, specifically 'Win.Trojan.Agent-36166', confirm the malicious nature of the file and its extracted artifacts. The presence of JavaScript suggests an attempt to download and execute a second-stage payload.

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` `6c526854a3073bbbb45f454cbe3eb70caaec49bf99a977ef1144e57f6bffd07e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75114 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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