PDF malware analysis — malicious · 6741fb01b145f592

MALICIOUS

PDF

14.7 KB

MD5: 78dfd0ad2c27572eac3c7c31c03a5a92 SHA-1: dbe41a4c4085ea9697f25b76ca403ab5348e6a9e SHA-256: 6741fb01b145f5920d3ac050537a88dda3b59b6813d981cac9c2f034749732cc

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged as malicious by multiple engines, including ClamAV, which identified it as 'Pdf.Exploit.Dropped-78' and an extracted artifact as 'Pdf.Exploit.Agent-36809'. The presence of an XFA form and an embedded JavaScript payload within a PDF stream indicates an attempt to exploit vulnerabilities for client execution. The embedded script, though truncated, suggests it is designed to download and execute a secondary payload.

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` `36267e19449b4deb0aae4fc927486ce1b174ea1a2ccd112970da068ee1bedb8c`	pdf-embedded-script	PDF raw stream script payload at offset 0x329	14291 bytes
Detection ClamAV: Pdf.Exploit.Agent-36809 Obfuscation or payload: unlikely

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