PDF malware analysis — malicious · 7a0a4f9160ff3a1a

MALICIOUS

PDF

14.6 KB

MD5: 18308638e4a7bc6f732ee4139c5ddb4a SHA-1: 431854b2358c20c935bdc48b151857d20472e4b6 SHA-256: 7a0a4f9160ff3a1ab38c9e5187a966f08c77ba4eb7c45605a57be87ae8168566

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF utilizes XFA forms and an embedded JavaScript payload, as indicated by the PDF_XFA and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detections confirm its malicious nature, identifying it as Pdf.Exploit.Dropped-78 and an extracted artifact as Pdf.Exploit.Agent-36809. The embedded script likely downloads and executes a second-stage payload, contributing to the high ML_NYX_PDF_MALICIOUS score.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low 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.
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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000329.bin` `9546ff3a0e96aafe3399e07b9d036dbb1180b2851da75cbd25e0fb2e3bd11a85`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14261 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.