PDF malware analysis — malicious · 25c9da161e88bc73

MALICIOUS

PDF

4.1 KB

MD5: bf99c084a1bb8351adae63a2a9db4580 SHA-1: c47daca8ce5070e6607f0238d7e20910573d9ad0 SHA-256: 25c9da161e88bc73279a99fd48c01646dd49d2b7ccff5bb1626e8d69d7a465ab

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF exhibits multiple indicators of malicious intent, including embedded script payloads and a high ML classifier score. The presence of an embedded file suggests it is intended to deliver a secondary payload. The XFA form and embedded file heuristics point towards a delivery mechanism for malicious content.

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` `4055a122c79312ebaadc237584e08c3c25b1c9a517487d2a992dff748a6fe915`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12630 bytes

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