PDF malware analysis — malicious · d2d332dcb27d74cb

MALICIOUS

PDF

136.3 KB Authoring application: PyPDF2

MD5: cf06ee000f6f989cadb7f5412573e603 SHA-1: f928a812ec20c3e0ba2fc8dd4744f5c500d612f7 SHA-256: d2d332dcb27d74cba13d5e89e5d9572525a2db864d7c77ed389ccb9983cbe252

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, with heuristics indicating the use of eval() and obfuscation. The ML classifier strongly flags this PDF as malicious. The presence of JavaScript streams suggests the sample is designed to execute code, likely to download and run a further stage. No specific family could be identified.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0022_000.js` `a0abb6df746801ebfd1546f1d56152c93c96db5f07c8799d02b0ef2e73b797ec`	pdf-javascript-stream	PDF /JS object 22 at offset 0xBC9	83848 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0022_001.js` `b16384ceb762860350f1a633b365de7bb57eabef2f7da7f0917187af0cdd2ac3`	pdf-javascript-stream	PDF /JS object 22 at offset 0xBC9	630 bytes

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