MALICIOUS
86
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.001 Spearphishing Attachment
T1027 Obfuscated Files or Information
This PDF sample was flagged as malicious by an ML classifier with high confidence. It contains embedded JavaScript, and importantly, it is encrypted with JavaScript, indicating an attempt to hide its true payload from static analysis. The presence of JavaScript actions and embedded JS streams strongly suggests that the script is responsible for decrypting and executing the malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
-
Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JSPDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
-
JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
-
Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Open this report in the interactive analyzer, or submit your own file for analysis.