PDF malware analysis — malicious · 68006ff9c28aacfe

MALICIOUS

PDF

3.2 KB

MD5: 29ca0f538baa71bc423f0bf88d89274e SHA-1: 590c452f7f602bc8c00d633e148e01b20b50a8f7 SHA-256: 68006ff9c28aacfe6ce22da3a39af636242bda40b7f7039349df04596b83257a

206 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file contains embedded JavaScript that is obfuscated but appears to be designed to exploit a vulnerability. The script uses the unescape function and calls a method that likely executes a downloaded payload. The critical PDF_JS_EXPLOIT_CLUSTER and ClamAV detections confirm its malicious nature, suggesting it's a downloader or dropper.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 5

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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` `1f5bafd4d64f08dcfadf1885f494bc257e152a2a5b04ac3fd87c66a79ba4e418`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C6	507 bytes

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