PDF malware analysis — malicious · 9d7ce32909843964

MALICIOUS

PDF

4.2 KB

MD5: ac8f21514084328d012b9171a99544cf SHA-1: cff7af48e3d2f159e66d23734e3639cdfbe44818 SHA-256: 9d7ce32909843964e5a0e1cc43a0e48b5eeb45284104ec1b6b97e4cba8011631

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1566.002 Phishing: Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF was flagged by a machine learning classifier with high confidence as malicious. Static analysis revealed an embedded script payload within a PDF stream, indicating a likely delivery mechanism for a secondary payload. The presence of an embedded file further supports this, suggesting the PDF is a container 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` `e962c04a32fbe42c0eb09cbb04544571c0171cfd08f7a5f0b14c064512656bfa`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	13001 bytes

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