Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f269bc202aa251…

MALICIOUS

PDF

19.3 KB
MD5: f4851ea4085aeabc4b6467a58e9ca630 SHA-1: baf8bab44c0defec7807c8bead47ab237bd2349a SHA-256: d1f269bc202aa251125ca9cab0ee0d006e862b0e758372380e68189601c17b12
126 Risk Score

Malware Insights

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

The critical ClamAV detection and high ML classifier score strongly indicate maliciousness. The PDF contains embedded content and an embedded script payload, suggesting it's designed to exploit vulnerabilities. The embedded URLs, while mostly benign or unknown, are part of the document's structure. The XFA form suggests a potential for complex scripting or exploit delivery.

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
71ab30b768b556d54cb20338b4028b56b8ff09b2efa2738cee68f3ec8196d099
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19018 bytes