PDF malware analysis — malicious · f87fe4cd6b65f7d2

MALICIOUS

PDF

12.1 KB

MD5: 9965718c7ba2ef46a39392df78dad642 SHA-1: c3e0439c7a31856742a36b8a2436fa80b48ef0fd SHA-256: f87fe4cd6b65f7d2479890d001c46c0bb4a7b3767b0c22d8100459e49ecfe307

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The file is identified as malicious by ClamAV (Pdf.Exploit.Dropped-78) and a machine learning classifier. Heuristics indicate the presence of an embedded script payload within a PDF stream, suggesting it's designed to exploit vulnerabilities. The embedded URLs, while not directly malicious, are part of the PDF structure.

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
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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_file_obj0008.bin` `8ddce73069c82d1cb90ffa30fe4b280fe25f51619c29acf1b502742c83091ae8`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11630 bytes

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