PDF malware analysis — malicious · 09465d1b76e723a2

MALICIOUS

PDF

3.2 KB

MD5: 46acbd595fa23de745c5688262766bd0 SHA-1: 8c899f88524649c45663f7aa96717a6edd642dad SHA-256: 09465d1b76e723a2975d298a5809a923600e5984d81cc04ccaacc204b283712a

206 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 that is obfuscated but appears to be designed to exploit a vulnerability. The script attempts to execute a function, likely to download and run a malicious payload. Heuristics and ClamAV detection strongly indicate this is a malicious PDF exploit.

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` `2ff851ac7f4ae87c496529cc06e402819835e7c4ad035337bff7fa37896494ae`	pdf-javascript-stream	PDF /JS object 7 at offset 0x9C7	484 bytes

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