PDF malware analysis — malicious · 0a5a1bff9031d412

MALICIOUS

PDF

16.0 KB

MD5: b612dbdec5253feb65305504805bf7f4 SHA-1: 0f087da3474935a1d401be66e6476e2c6fb4baeb SHA-256: 0a5a1bff9031d41255cacab6b30a48ce6375a7427b821248c029716da5147f28

106 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV also detected it as Pdf.Exploit.Agent-36324. The JavaScript appears to be obfuscated but is designed to download and execute a secondary payload, a common technique for malware delivery. The specific exploit and payload are not fully discernible due to obfuscation, hence the family is unknown.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36324 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36324
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_obj0076_000.js` `6ed3e00364a26643876a1b342617f4a3213794ad28818cd1122aeb0acafbd899`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2D4	15466 bytes

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