PDF malware analysis — malicious · 6ca5e193e0cd6edc

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: 844d98b6408cc805c394333e544a4a12 SHA-1: 81b54a6824e9c2eefd21323dc5b15d8183699ba2 SHA-256: 6ca5e193e0cd6edcebe505dd682bc8f474084ea059843f10efddfa6a66706a1b

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that is heavily obfuscated but appears to be designed to download and execute a secondary payload. The ClamAV detection of 'Win.Trojan.Agent-36166' further confirms its malicious nature. The primary attack pattern is likely spearphishing attachment, leading to the execution of this malicious script.

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` `7b941e2170daff0355f33789eb322a2275ca5a2e4fa6993916c995a4b069f2e1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74645 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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