PDF malware analysis — malicious · cdbfdf10dc29c788

MALICIOUS

PDF

4.1 KB

MD5: aba89a0881a44f8afcd0d6efc233211d SHA-1: 5b2f734c576b52b687ad033a8b7f15cde91590a9 SHA-256: cdbfdf10dc29c788c218a0b242dd634ba95c0e45eda331a5a4ef3de5218ed6e7

66 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF was flagged by a machine learning classifier with high confidence (0.999972) and also triggered heuristics for embedded script payloads and embedded files. The presence of an embedded file, 'embedded_file_obj0008.bin', suggests it is likely a dropper or exploit delivery mechanism. The XFA form heuristic might indicate a technique to bypass certain PDF security controls.

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` `5bf613b5ad326d6cf2650bac6f81a12ea6f7b8268ca2c6de75ea339baa45375d`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12550 bytes

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