PDF malware analysis — malicious · a6ce4ce285fc149a

MALICIOUS

PDF

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

MD5: e08b8418d604ba2f39a2fcd95d07a9ca SHA-1: bfd28fa1ee95d4e7ecd836b7a1b2ba5a1bdf962e SHA-256: a6ce4ce285fc149a8cc8663f0093b26898b221f7c10192d4eb5df5dee05646de

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier strongly indicates maliciousness. The embedded JavaScript stream, named 'javascript_obj0001_000.js', is obfuscated and likely responsible for executing a malicious payload. The exact intent of the script could not be fully determined due to obfuscation, but its presence strongly suggests a malicious document.

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` `7d1d6b200b56f42ab866e1466f036e52bdb60d72d0eebf48fcd68c5bfe537cb1`	pdf-javascript-stream	PDF /JS object 1 at offset 0x648F	807 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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