PDF malware analysis — malicious · d94ee531fd74f214

MALICIOUS

PDF

27.0 KB

MD5: 7828c523131b7366863ebaaea763d043 SHA-1: 7728c7d2c342b9baf8aa91ca008d45e853a7ff64 SHA-256: d94ee531fd74f214e24a309ffed2b13f27c29deba4c925188725393374214a71

134 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, which is flagged as malicious and correlated with other PDF-specific exploit indicators. The ML classifier also strongly indicates maliciousness. The presence of ASCIIHexDecode and ASCII85Decode filters further suggests obfuscated exploit code. The primary attack vector appears to be leveraging JavaScript within the PDF to execute malicious code.

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

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