PDF malware analysis — malicious · a40af72bd1aef777

MALICIOUS

PDF

11.8 KB

MD5: 02511ee3c019e87948dc602d9b7ddd2b SHA-1: 806c4456e79da8be9f2a43774b65e05a41c0b244 SHA-256: a40af72bd1aef777b6b76141feadf9294ba4be475ed8f7dbfd6f780ff31fe734

126 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV detection and high ML classifier score strongly indicate maliciousness. The PDF contains an embedded script payload, suggesting it's designed to exploit a vulnerability and drop a secondary malicious file. The embedded file artifact further supports this delivery mechanism.

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` `299687ea7461dfdcbe144d361a9d24224b37ad3cbaa2ef2f44e8edbe0e7f810b`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11314 bytes

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