PDF malware analysis — malicious · 7ca2dc713747fb4a

MALICIOUS

PDF

3.8 KB

MD5: 174b03aaeb189b86c569f6d47dffe093 SHA-1: ecee7176e19789622a3f8cb60c966cbeb9544c50 SHA-256: 7ca2dc713747fb4aeba6e33c9621c392169a205da89ddfe013a5d84ec307ccb2

142 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The file is a PDF containing embedded JavaScript, which is a common technique for delivering exploits. Heuristics indicate the use of ASCIIHexDecode and ASCII85Decode filters, often employed to obfuscate malicious content within PDFs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to an exploit execution.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

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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