Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f00840ae0a5f6f2…

MALICIOUS

PDF

19.2 KB
MD5: 3c382d71d759a75a5657f28b89396fa1 SHA-1: 34f4fbc4ebf03ecddf8b35fbc54ad0d1c1e42ef8 SHA-256: 6f00840ae0a5f6f22f2e97c22f54b03d4c23c4f04a5d9afb19efa2e993c2532f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded script payload and an embedded file, indicating it is designed to exploit vulnerabilities and deliver a secondary payload. The presence of XFA form elements suggests a potential exploit targeting Adobe's XML Forms Architecture.

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.

FilenameKindSourceSize
embedded_file_obj0008.bin
0493120bb479be1e62b45fd85141af2a0eb4293548d9eca51691208ed7132e44
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18919 bytes