Malicious PDF — malware analysis report

Static analysis result for SHA-256 9725d19275367af0…

MALICIOUS

PDF

12.1 KB
MD5: ac48da4b7f04cbc234419395674bbe01 SHA-1: 08e5c670cd52174093333ba285eb1ea8054e3ef9 SHA-256: 9725d19275367af0776d228ab8f009b9071917faa89e0cba7c52b6a6a41fa032
126 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV detection and high ML classifier score strongly indicate malicious intent. The PDF contains an embedded script payload, suggesting it's designed to exploit vulnerabilities upon opening. While specific URLs are present, they are not directly indicative of a payload delivery mechanism in this context. The embedded file further supports the payload delivery hypothesis.

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 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
  • 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.

FilenameKindSourceSize
embedded_file_obj0008.bin
e58c437f1ca6c507a7c76027e0025356aa0bdc7a6d0586474949d5be385d98cd
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11641 bytes