PDF malware analysis — malicious · c4fa3c8b0e676883

MALICIOUS

PDF

11.9 KB

MD5: 904b31c14c9447ba140c7bf76f5a7081 SHA-1: 91613665562911b70fff881671f81347c6b7d012 SHA-256: c4fa3c8b0e676883558b9d5624b1dce90283d7da76828e9f3ef4f78826ffe93b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF contains embedded content and an embedded script payload, as indicated by the 'PDF_EMBEDDED' and 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristics. ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded file 'embedded_file_obj0008.bin' is likely the delivered payload. The XFA form structure suggests a potential exploit vector.

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` `9eeb4d609e51e50ce33c9ba0400f8c2bb883ba1fae9509e8a1e2cac8046a6ba6`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11410 bytes

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