PDF malware analysis — malicious · 94b8f6240d86fa2a

MALICIOUS

PDF

9.6 KB Created: 2010-05-17 05:31:22 Authoring application: jFa0kza8 (via ierIOhGUwO4Gqq)

MD5: c55c3e31fc821db81dd4b1999698c886 SHA-1: f211a76097b1e58e21b76d828238c9fc956119f1 SHA-256: 94b8f6240d86fa2a692c61e1ef8afc5864ba2b952ceab47d00c2204a0d05c207

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by an ML classifier and contains embedded JavaScript. The JavaScript stream includes an eval() call, indicating obfuscated code execution. This pattern suggests the script is designed to download and execute a secondary payload. No specific family could be identified, and the obfuscation limits deeper analysis.

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_obj0007_000.js` `3ba44aa50f58ce9dedc4ddaff9127b5619277a2a976d7953bcb256fd4f71b118`	pdf-javascript-stream	PDF /JS object 7 at offset 0x236	8128 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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