PDF malware analysis — malicious · 90210c8981e3c017

MALICIOUS

PDF

29.1 KB

MD5: aa119772db9d4232d4a2c12b600ddd88 SHA-1: 9671c92dd0408ed7601c2f6394a7c2c765bdd007 SHA-256: 90210c8981e3c0178fe612a69ee031eda79be129e19dcba0fb557bbbeeba923a

74 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and uses ASCIIHexDecode and ASCII85Decode filters, which are common indicators of malicious PDFs. The ML classifier strongly flagged this PDF as malicious. While no specific exploit or payload is detailed in the provided evidence, the presence of these elements suggests an attempt to exploit a vulnerability and execute malicious code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85

ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation

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