PDF malware analysis — malicious · bbf483d7c657eed1

MALICIOUS

PDF

4.1 KB

MD5: bfdf063bb8dd52e894a7f09b90629725 SHA-1: 7dd76f5995a3f1548321ab95720cdb4fd91ee586 SHA-256: bbf483d7c657eed1019f8b718d40afe0028b06c9a319809e4801ff2ebb9c2166

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The ML classifier strongly indicates this PDF is malicious. Heuristics confirm the presence of an embedded script payload and an embedded file, suggesting it's designed to exploit vulnerabilities and deliver a secondary payload. The XFA form heuristic may indicate a technique used to bypass certain PDF security features.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `ab0aa7caf05492534589636f54a90cb75bbc52b5f2315a1002adb837a08aa806`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12854 bytes

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