MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The PDF file contains XFA forms with executable JavaScript, flagged by multiple high-severity heuristics. ClamAV detection confirms this as a malicious PDF exploit, likely Pdf.Exploit.Agent-36830. The embedded script is designed to exploit a vulnerability and execute a payload, which is a common technique for delivering malware via malicious documents.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
-
XFA form contains risky executable script high PDF_XFA_SCRIPTPDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
-
ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36830
-
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAVClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
-
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
-
Embedded script payload in PDF stream low 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 URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/
- http://ns.adobe.com/xfdf/
- http://www.xfa.org/schema/xfa-form/2.8/
Extracted artifacts 7
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0008.bin0a2224c4023b216235b61c3fc4dd17bbfac1ab23a545687f51b97604cf654712 |
pdf-embedded-file | PDF EmbeddedFile object 8 at offset 0xD7 | 46 bytes |
embedded_file_obj0009.bin15e58e267b62d5c29b5c9ad9360f56596607dac55bce7b17668190199636a350 |
pdf-embedded-file | PDF EmbeddedFile object 9 at offset 0x14D | 687 bytes |
embedded_file_obj0010.binb9dc770324ae2a66fd1d9c8b9605e3a9ddaae9d1311dffe002d37a59fdc6e4bc |
pdf-embedded-file | PDF EmbeddedFile object 10 at offset 0x447 | 183 bytes |
embedded_file_obj0011.binb81496c93278e59e66350202f1ac879f95083c5b6ef3c3a05a1a4af3669e6457 |
pdf-embedded-file | PDF EmbeddedFile object 11 at offset 0x549 | 360 bytes |
embedded_file_obj0012.bind2f06f3fc6900856fe613a64a561919c8454dcbe0fdf238fb8b43e07016955ea |
pdf-embedded-file | PDF EmbeddedFile object 12 at offset 0x6FC | 190 bytes |
embedded_file_obj0014.bin48bdc1355e0d583a38a9788f6af9f50e0006bca86fa309dbbd2a4cc6c48ca81a |
pdf-embedded-file | PDF EmbeddedFile object 14 at offset 0x807 | 40589 bytes |
|
Detection
ClamAV:
Pdf.Exploit.Agent-36830
Obfuscation or payload:
unlikely
|
|||
embedded_file_obj0015.bin78b09463af5cd373870eae2e3e83de87b7f6b659e0d0117ab4c09d90ebb2ad95 |
pdf-embedded-file | PDF EmbeddedFile object 15 at offset 0xA6DE | 68 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.