Malicious PDF — malware analysis report

Static analysis result for SHA-256 002d5c5e8548424e…

MALICIOUS

PDF

18.7 KB
MD5: 1884f6de64b022203847409f3b555b60 SHA-1: 6f5d983b47994aa2f001263c554347cdcfc4d0aa SHA-256: 002d5c5e8548424ef0c89c191a84ed3e0f47bc12487204f5d0c7e3e39b06d2f7
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-78' and a high ML score indicating maliciousness. The presence of an embedded script payload and an embedded file suggests the PDF is designed to exploit a vulnerability and download or execute a secondary stage. The embedded file 'embedded_file_obj0008.bin' is likely the delivered 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 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
ff133af03b5a512718e6f0b2d33bd1a89d13b7d3b404769a8baf72d70002ef91
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18382 bytes