PDF malware analysis — malicious · fbbf0f6fcf0c314c

MALICIOUS

PDF

27.4 KB

MD5: e37db369e229918f31f4db7097696b26 SHA-1: e8ed00091d130be60b8899b7e72dbd9e0de2114c SHA-256: fbbf0f6fcf0c314cdc93b877aa37208f4fbf35ec1ae85fd190dafee324eeebdf

74 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript and uses ASCIIHexDecode and ASCII85Decode filters, which are commonly used to obfuscate malicious content within PDF files. The ML classifier strongly indicates maliciousness. While no specific exploit or payload is detailed, the presence of these elements suggests an attempt to execute code or exploit a vulnerability upon opening the document.

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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