PDF malware analysis — malicious · e4d0b1ee50bc4aaf

MALICIOUS

PDF

16.0 KB Created: 2007-12-35 21:45:26 Authoring application: Adobe

MD5: d1f3e7afd742805739c9d19b16d2d46d SHA-1: 100dcea44e0cf05c789143c3eb6f2eacd246d22d SHA-256: e4d0b1ee50bc4aafee4f21c9387658803ea2600aac01aacb73de892117cb3890

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, including a call to eval(), which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The presence of JavaScript suggests an attempt to exploit vulnerabilities within the PDF reader or to execute arbitrary code. The specific JavaScript file 'javascript_obj0036_002.js' was identified as a suspicious extracted artifact.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `d0928565411dd5c1491bd9862799f5e76f62bc74e3ea037944ab0917edc5d6f5`	pdf-javascript-stream	PDF /JS object 32 at offset 0x3A8	1475541 bytes
`javascript_obj0034_001.js` `d797de515dac4f8369b71edf86d0fc9aa8fe1224d8f9d3f1eea8a19a1f23bfc7`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3D2F	332 bytes
`javascript_obj0036_002.js` `351349db1f2c462951d107c63f395d2e3d546cbac252089bc55d7cd7501a396b`	pdf-javascript-stream	PDF /JS object 36 at offset 0x80	426 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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