PDF malware analysis — malicious · 7bb701abc004ed41

MALICIOUS

PDF

1.95 MB Created: 2011-72-51 03:25:00

MD5: 11ff36f691890ac13a6bc628609bfa3b SHA-1: 2ac458556b942fb6b55862dafbbc951a7affb931 SHA-256: 7bb701abc004ed417447cbd267b3b7d577adce86d786210462e61784ed0cdb9b

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file was flagged as malicious by an ML classifier with a high confidence score. Static analysis revealed embedded JavaScript, including an eval() call, indicating that the script is likely obfuscated and designed to execute arbitrary code. The presence of a JavaScript action and an embedded JS stream further supports this. The extracted artifact 'javascript_obj0001_000.js' is the likely payload.

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_obj0001_000.js` `3b9a998c03843c5ff553887878ea1ef4b208c4386937c5b15751c00332580b6f`	pdf-javascript-stream	PDF /JS object 1 at offset 0x6238	537 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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