PDF malware analysis — malicious · ef983285336caae4

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: 6fb61773f85ee53ec99918d86c4f1d8d SHA-1: 4d411aa8dfc223a6e01b204fbccf2497d5817c99 SHA-256: ef983285336caae4199882864b8f1f80be2ef1ecec9dde1bb7bd0a90d5d8db4d

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections confirm this is a malicious file, specifically identified as Win.Trojan.Agent-36166. The embedded JavaScript is likely responsible for executing the malicious payload, potentially leading to the download and execution of further malware.

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` `cad449823da1c66515a836789b9b2ef973e598068ad2f52d0be8ae0628c0c697`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75178 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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