PDF malware analysis — malicious · 067042759601b1d1

MALICIOUS

PDF

3.9 KB

MD5: c7a7999c95a8d7a47e8d9064510d34de SHA-1: 93f5533772ed2dbd9a7d406897be7ff9069959fb SHA-256: 067042759601b1d1872f83d7b624531771075b6ecf4ecfa7a2b9be9864ebe0af

202 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains embedded JavaScript and utilizes ASCIIHexDecode and ASCII85Decode filters, which are common indicators of exploit code within PDFs. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to exploit a client execution vulnerability. No document body text was available for further analysis of the lure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-36178 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36178
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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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