PDF malware analysis — malicious · d4416d02f9459871

MALICIOUS

PDF

4.1 KB

MD5: 021ad89a1b1e22ed5acd5bc49363ea16 SHA-1: 6cb0714d43a4648b40a6578cdb8bb62e817d12f6 SHA-256: d4416d02f94598712a6bbd04daa5980f8d34096c0edb2e6c58541c7989dbd7ad

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier with high confidence as malicious. Heuristics indicate the presence of an embedded script payload within a PDF stream, and an embedded file object. These findings suggest the document is designed to exploit a PDF vulnerability to download and execute a secondary malicious payload.

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` `4fd4d5e309fb6283b9d75a230df795fdd82cdd5adbdb0edfc9ad588d373d45da`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xEA	12559 bytes

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