PDF malware analysis — malicious · 72f187230bd05572

MALICIOUS

PDF

11.8 KB

MD5: c181a95a92c87c6246e79ab3e332aa56 SHA-1: fb503a0ccb17f4f22cf73beb3231fad0598df461 SHA-256: 72f187230bd055722e50de5c5c2f0c824467244b09459b2f0c92d29bd875f45f

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 with the signature Pdf.Exploit.Dropped-78. It contains embedded content and XFA forms, which are common vectors for PDF exploits. The embedded file suggests the PDF is designed to drop a secondary payload.

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` `711939a239487a431df2dcca2bc14ff7cb7e95aab3b3e99ab5aa935b6bd2d5a4`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC8	11335 bytes

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