PDF malware analysis — malicious · 3b8e8cf4c02ff1ca

MALICIOUS

PDF

12.0 KB

MD5: 7900dad21ce6e527b8de5c18da5708ca SHA-1: 0571e40d3e4d5a0454e4dca1882a23dc95abae2a SHA-256: 3b8e8cf4c02ff1ca6035537e7ba7df97a0d75cc70e1eb4fe4c12d41e8e46d411

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF file contains an embedded script payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded file and XFA form suggest a potential exploit delivery mechanism. The primary IOC is the ClamAV detection signature.

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` `5ac6acfe83e03c6ceb19cd3a2ee4d036826a6f017cff55b8d6a04cd8c36fc71d`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11560 bytes

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