PDF malware analysis — malicious · 9ca955195c13d7ae

MALICIOUS

PDF

2.3 KB

MD5: 05266f1b6edccd0070b816bc1cd41af1 SHA-1: 99212fef9d15124617e9391bb76294086519dbe6 SHA-256: 9ca955195c13d7ae53374f2fc63be8940f912e922a01941d686cef311c51a63a

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, flagged by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The ML classifier strongly indicates maliciousness. A high-confidence heuristic, PDF_EVAL, points to the use of eval() within the script, which is commonly used to deobfuscate and execute malicious code. The extracted artifact 'javascript_obj0009_000.js' is the likely source of this execution. The script's intent is to download and execute a second-stage payload.

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_obj0009_000.js` `0d712f8663f28d81e1e39cdbec7d6350feb71343e04ae39b31d78c121f033a37`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	10305 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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