PDF malware analysis — malicious · 186b25d9a8c43544

MALICIOUS

PDF

12.0 KB

MD5: 04c8ddf3d284f1f3ebe5e69d53bf1495 SHA-1: be7207c507d99fd459588553cb43f3f01e455d56 SHA-256: 186b25d9a8c43544d77b92870c57bddc0096c2c6e69888fa81fd76d9ebb457e9

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded script content and is flagged by multiple heuristics, including ML and ClamAV, as malicious. The embedded file suggests a dropped payload, indicating exploitation for client execution. The presence of XFA forms and embedded files points to a common technique for delivering exploits.

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 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 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://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` `f9d02f22abbf281a5546a8ab052f9a3182b18fec448eb8870d876455618e9bbd`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11549 bytes

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