PDF malware analysis — malicious · e64625783d962e6b

MALICIOUS

PDF

4.1 KB

MD5: bf857add29d06b47d4f9d199946e09ed SHA-1: 221e0095a791056a797271441b091bdcb230ba92 SHA-256: e64625783d962e6bb93c4b05a6d46a19094a97d3c051f7abc3d479dc56e1a0a0

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File Execution T1204.002 Malicious File Execution: Malicious Attachment

The PDF file was flagged by a machine learning classifier as malicious with a very high confidence score. Static analysis revealed an embedded script payload within a PDF stream, indicating an attempt to execute malicious code upon opening the document. The presence of XFA forms and an embedded file further suggests a complex, potentially multi-stage attack.

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` `651a61f639b0a4cc14802f8046935e72c0f3159daeebb8d380063c50abedb3df`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12753 bytes

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