PDF malware analysis — malicious · 57e8a57161d787ca

MALICIOUS

PDF

2.7 KB Created: 2008-12-17 23:30:58 UTC

MD5: a0d125684a2c8f442f6aa3bc6132ab7a SHA-1: 31c9762053380b3f17f17fdc381a8df60c65c616 SHA-256: 57e8a57161d787cabafb3deb524ad58f6fc4445b20eeffa678be702bfaab3630

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript with a high-confidence eval() call, indicating obfuscated code execution. The ML classifier also flagged this PDF as malicious with a high probability. The JavaScript stream, named 'javascript_obj0006_000.js', is the primary artifact. The script's purpose is inferred to be downloading and executing a second-stage payload, a common technique for malicious PDFs.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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_obj0006_000.js` `02d5cb1eb8f41eb41a7fbcca0724a4bc813450164bb59c756b6d26fdfa0a24f0`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB5	3793 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.