PDF malware analysis — malicious · ac3b72160ca28311

MALICIOUS

PDF

26.3 KB Created: 2011-72-51 03:25:00

MD5: 2861c1c6a8867171d70cd41e7475e72c SHA-1: 1d2288fb1f2f9d601e0dd5109e996fd43cedfab7 SHA-256: ac3b72160ca283111db48d92a42c279ebc92277dafd692b82859bf5711117ab9

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, which is flagged as suspicious by multiple heuristics, including an eval() call and ML classification. The JavaScript stream, named 'javascript_obj0001_000.js', is likely responsible for executing malicious code. The exact intent of the script is obscured by obfuscation, but its presence within a PDF and the high ML score indicate a malicious payload delivery.

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_obj0001_000.js` `f4202d738f4cd58363277faacd3d6189801ef774e468d0d22f2196b61ebd322a`	pdf-javascript-stream	PDF /JS object 1 at offset 0x64E1	890 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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