PDF malware analysis — malicious · 5f629358b62678d5

MALICIOUS

PDF

11.8 KB

MD5: ca3d6f827cbbe40470663e5034db7440 SHA-1: 3bd5ea6218c89095c0c3d03cc3e1b8dc4b390ec2 SHA-256: 5f629358b62678d580274e6a288001981b5876081f27aa3d0d1d81d9bd7efa65

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it contains an exploit. The presence of an embedded file object suggests it is designed to drop a secondary payload. While specific URLs were benign, the embedded file itself is a primary indicator of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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
Embedded script payload in PDF stream low 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 URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `eba80ee55a4fed5a0635d907fc60e26f8e30d6a90b05f2a2bdd156109d894ae9`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11325 bytes

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