PDF malware analysis — malicious · 375e207ca799020d

MALICIOUS

PDF

10.7 KB

MD5: c452768b7e941a22ff728147d2724eb2 SHA-1: 8df0b9a2bcf52d1b01e5f5cbf06b884d02803e37 SHA-256: 375e207ca799020d0242b013580475654cddb1cdc007f559e13509b183157f15

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by a machine learning classifier and contains embedded, obfuscated JavaScript. The JavaScript stream, identified as 'javascript_obj0007_000.js', likely serves to download and execute a secondary payload. The presence of JavaScript actions and unescape calls within the PDF structure further supports this malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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_obj0007_000.js` `f8f2e2d1686c9a94a8ac115bfd0c9ff46b7de070cb1db99410c08b23364020d4`	pdf-javascript-stream	PDF /JS object 7 at offset 0x233	48243 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 232 eval/decoder/string-building token(s).

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