PDF malware analysis — malicious · ba63ea3c2f865537

MALICIOUS

PDF

4.8 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a892d36b1e159bc8a137c5179160691d SHA-1: fcb76f13cf4d202fd2b9697fa7f8ec3c5d2ffc7b SHA-256: ba63ea3c2f865537ee4f8e3bbfc2a42ab93c3494d671d2685f0ecdb6de134556

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call within the JavaScript stream (PDF_EVAL) strongly suggests that the script is designed to execute arbitrary code, likely to download and run a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence. No specific family could be identified.

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_obj0013_001.js` `0e35df1dd558bff2b41b5ba65e41aa2ea2bf85a0ad35dcd21a7e54220df429ad`	pdf-javascript-stream	PDF /JS object 13 at offset 0x367	6606 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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