PDF malware analysis — malicious · 8044d76d430bfe05

MALICIOUS

PDF

16.3 KB

MD5: 25830b38438d8dd3942509c7bd738f6b SHA-1: 14004e1b5847c4854621df57774e8f75fd99103b SHA-256: 8044d76d430bfe0576dc4258637d64e98a2fa13f5cbe31552a8d713b0767a6aa

206 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 Scripting: JavaScript

The PDF contains embedded JavaScript, including an eval() call, which is indicative of exploit code. The ML classifier strongly flagged this PDF as malicious. The combination of PDF-specific JavaScript exploit signals and the ML classification suggests the file is designed to exploit vulnerabilities through its embedded script, likely leading to further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.

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