PDF malware analysis — malicious · 0af5477a67d9aba6

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: 2f7e5b4547de5224331b2305c0899a95 SHA-1: 743ae7e26f8f6ddf5161e2567354233da62f4d8c SHA-256: 0af5477a67d9aba61c6129add09a5b5f6bb8aa62f4aad751ce427371be087e83

166 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, which identified it as Win.Trojan.Agent-36166. Embedded JavaScript was detected, indicating an attempt to exploit vulnerabilities within the PDF reader to execute code. The script's obfuscated nature prevents a detailed analysis of its specific actions, but its presence strongly suggests a payload download or execution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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` `189f375db7bbee2b282f8d2008f5008a23f88c93435f2245afa1452c44648e93`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75193 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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