PDF malware analysis — malicious · f0d22688cc7074c6

MALICIOUS

PDF

26.3 KB Created: 2011-72-51 03:25:00

MD5: e4c44af7907b488923d8941098d7ba0a SHA-1: 067fb5e59e396ee7414a875801af96ad58495892 SHA-256: f0d22688cc7074c616625179ed9587e8c16964958d3349bd3508bf970bf13c89

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier strongly indicates maliciousness. The embedded JavaScript, named 'javascript_obj0001_000.js', is likely responsible for executing malicious code, potentially downloading a second-stage payload. The exact functionality of the script is not fully discernible due to obfuscation, but its presence within a PDF is a strong indicator of an exploit attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `b181af1730e911118b80069fa841400a0e29ac3be52434f4c8e22ebbc9e99d3e`	pdf-javascript-stream	PDF /JS object 1 at offset 0x648B	923 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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