PDF malware analysis — malicious · a0d8a94b5ef14c36

MALICIOUS

PDF

93.6 KB

MD5: 389336cb4c5ee4af4e181f75ce10c4a9 SHA-1: 34bd1547bc1593d9384aa7a23e25ce0a54cf25bf SHA-256: a0d8a94b5ef14c3640f339697e09a698bc272114d6de893246bc99b2b08f77ec

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file utilizes XFA forms and contains an embedded script payload, as indicated by multiple high-severity heuristics and ClamAV detections. The ML classifier strongly flags this PDF as malicious. The embedded script is likely responsible for executing the exploit, leading to the delivery of a secondary payload. The specific exploit and payload are not detailed in the provided evidence, but the overall pattern suggests a malicious document designed for exploitation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV 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 script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF 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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One 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/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000246.bin` `de2073e5eb9f634d5faf6a8190d780b061230cbdf6c18ab94317e1450b319af7`	pdf-embedded-script	PDF raw stream script payload at offset 0x246	95094 bytes
Detection ClamAV: Pdf.Exploit.Agent-36769 Obfuscation or payload: unlikely

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