PDF malware analysis — malicious · 9222a24d75d18ae7

MALICIOUS

PDF

7.1 KB

MD5: ff1ae8eeb7ce7cf913f0ab7f7986f73d SHA-1: 12d522ba3db647daee40702712c66cf83c0a36b3 SHA-256: 9222a24d75d18ae7baf016c123f4c87c9fe4a8916b2ac3285c44f301991c700d

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript streams which are flagged as suspicious. The presence of `eval()` calls and ML classification strongly indicate malicious intent. The JavaScript is obfuscated, but the heuristics suggest it is designed to download and execute a second-stage payload. The extracted JavaScript filenames are included as IOCs.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `e3f68fa5c6d2bff8248f2cc027e234e16a8539fdae03244d8d26d3830fe422b2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	6347 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0007_001.js` `529d5a1dc6620b2ff19728c70e45db3a7880f8c3a35258d04f55fa65b9cc6f2d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x26D	6092 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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