MALICIOUS
70
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF file was flagged as malicious by an ML classifier with high confidence. It contains an embedded JavaScript payload, identified as 'stream_001_off00000331.js'. This script is likely responsible for downloading and executing a secondary malicious file, which is a common technique for initial access and further infection. The presence of an embedded script payload and the ML classification strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
-
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOADPDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
-
Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
-
XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
-
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_001_off00000331.js339d8c0f54ff42197cd315525757ebce80afbabd10bd2d1b81736cec0812b6cb |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x331 | 13529 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.