MALICIOUS
86
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
This PDF sample was flagged as malicious by an ML classifier with high confidence. It contains embedded JavaScript and is encrypted, with an /OpenAction referencing the JavaScript, indicating an attempt to obscure or dynamically execute a payload. The presence of JavaScript actions and encrypted content suggests a technique to bypass static analysis and deliver a malicious payload. The ML classifier's high score further supports the malicious nature of the file.
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.