PDF malware analysis — malicious · 61661b660922514e

MALICIOUS

PDF

3.3 KB

MD5: 50a73a89c2cb05a83213b406ec1c01f4 SHA-1: 459df7c76338839fe2b029a9eb5dba1f27a40d94 SHA-256: 61661b660922514ecaccf29d4a68eb2adef8b628e999214039f91458de2c65a3

106 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of exploit activity. Embedded JavaScript was extracted, which appears to be obfuscated but likely intended to execute a payload. The script reconstructs a string from the PDF's title field and then executes it, a common technique for exploiting PDF vulnerabilities and downloading further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
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` `93a51c7d6d8d712a14a6684f1fab3f9edec5205473b365df194aac9133954aa8`	pdf-javascript-stream	PDF /JS object 7 at offset 0xA87	301 bytes

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