MALICIOUS
64
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF file is flagged as malicious due to the presence of encrypted content and embedded JavaScript. The JavaScript is likely used to obfuscate the actual payload, preventing static analysis and potentially downloading additional malicious content. The heuristics indicate that the encryption is tied to the JavaScript, suggesting a deliberate attempt to hide malicious functionality. The embedded JavaScript object is listed as a primary IOC.
Heuristics 4
-
Encrypted PDF carries /JavaScript — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JSPDF declares /Encrypt and also references an executable trigger (/JavaScript). 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.
-
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENTOptional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0009_000.js86caaed61ad366e9f6742cfb3acc5441ecf191600cc8170078818e6828371ab2 |
pdf-javascript-stream | PDF /JS object 9 at offset 0x3D3 | 29494 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.