PDF malware analysis — malicious · d5943c0f46a4ecaf

MALICIOUS

PDF

12.8 KB

MD5: 0384481435ac5019b4efa3841101354e SHA-1: 75bdb7761483b67ab1ec1a5ac4cd9ec9d6e6afae SHA-256: d5943c0f46a4ecaf3ad5ff1af226a47c01f604ce4f90f5af2212e9b9b466f6f9

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple high-confidence heuristics, including ML classification and ClamAV detection, indicating malicious intent. The presence of an embedded script payload and an XFA form suggests the file is designed to exploit vulnerabilities or trick the user into executing malicious code. The embedded script is likely responsible for downloading and executing a second-stage payload, though its exact functionality could not be fully determined due to obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
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://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_00000359.bin` `d7d057145b30c1c51d68e67d6a8c418f2b6d42329e15a528c8f5f97a79a31d16`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12388 bytes

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