PDF malware analysis — malicious · 5a223494f03cc3ae

MALICIOUS

PDF

27.1 KB

MD5: 6b53881f6abd722d6ab1505321fb0654 SHA-1: c5eb8e540dd76a085a155fafb8c05429ffa331ce SHA-256: 5a223494f03cc3ae04558b4870be4330b8e897dbda8f518b1e03a633162a122d

134 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_CORRELATED_MALICIOUS_JS. The ML classifier also strongly flagged this PDF as malicious. The presence of ASCIIHexDecode and ASCII85Decode filters, often used for obfuscation in malicious PDFs, further supports this assessment. The embedded JavaScript is likely responsible for executing the malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

Correlated malicious PDF JavaScript signals critical PDF_CORRELATED_MALICIOUS_JS

PDF JavaScript or auto-action content is corroborated by exploit staging, ML, or suspicious extracted-artifact findings. This correlation promotes old exploit-kit PDFs that otherwise remain in the suspicious band because each individual signal is intentionally weighted conservatively.
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

Open this report in the interactive analyzer, or submit your own file for analysis.