PDF malware analysis — malicious · ef374849f8b2636a

MALICIOUS

PDF

11.8 KB

MD5: af772f7aa0a3fbe51611397595a98885 SHA-1: 330937059fe4839c28cb734dc93fb45ec1a75114 SHA-256: ef374849f8b2636a87da34c3d75a1e682cd05fe14960426c74e732146eb419a7

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate this PDF is malicious. The presence of an embedded script payload and an embedded file suggests it is designed to download and execute a second-stage payload. The specific ClamAV detection 'Pdf.Exploit.Dropped-78' further supports this assessment.

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` `02779a14a222f52f664a74ddeaf65b82eb3367a891ca9db46e757fdc6e54fac4`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11325 bytes

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