PDF malware analysis — malicious · 6a901fdafe7b30cc

MALICIOUS

PDF

7.3 KB Authoring application: Bofatezozinefaxfa (via 45013Vogewojixariuawi)

MD5: 809e8be141f4ec9859cdb2f5c7f33600 SHA-1: 172009fba42814b37375385b03a8c3b5334f4a34 SHA-256: 6a901fdafe7b30ccf685d86d7b73efa4646506d83126cd688cc30ac2415d5c4f

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains obfuscated JavaScript, flagged by heuristics and a machine learning classifier as malicious. The JavaScript stream, named 'javascript_obj0011_000.js', is responsible for downloading and executing a secondary payload. The presence of JavaScript within a PDF document strongly suggests an attempt to exploit vulnerabilities or trick the user into executing malicious code, consistent with a phishing or malware delivery campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

Heuristics 3

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0011_000.js` `ca838ab153ea9de4fff1e74bdd0848fd720f71bc6fbee4425be234136cd19b41`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1349	2325 bytes

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