Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5fe2e8e14462997…

MALICIOUS

PDF

19.1 KB
MD5: 55cff8ed892d99cf814d19ece375c3cf SHA-1: baaf24fad1256bb79987956d721a3d2e3dccff4c SHA-256: d5fe2e8e14462997262ef4a4b84ab804c1191c6e27f81e23573a875a513af3e4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF file was detected by ClamAV as Pdf.Exploit.Dropped-78, indicating it contains an exploit. The presence of an embedded script payload and an embedded file further supports this. While the document body is obfuscated and contains no clear lure, the embedded script and file suggest an attempt to deliver a secondary payload. The URLs present are related to XFA forms, which are sometimes used in PDF exploits.

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
46ee2733b2e1c1d7bb9a0c93a21c04991dc71c85939d495d3ea536a0afa53a88
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18843 bytes