PDF malware analysis — malicious · 674b40081f00d93a

MALICIOUS

PDF

12.0 KB

MD5: a9fd7efb64f72be9b37af46e104e6a0d SHA-1: ef1c9045fa37a1a454debbd2f5ded497b0a0efa6 SHA-256: 674b40081f00d93ab46f2e60fa5f246ebcd8e4883282ded1c62ae352d4d290ff

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains an embedded file and XFA form, suggesting it's designed to exploit vulnerabilities for client execution. The embedded file is likely a second-stage 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
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` `0f1956c13271e40bafa7aa9601d728c7a87ccaf3353b07cc2264fd5625dc54d0`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11493 bytes

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