Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d5655da854a3bb…

MALICIOUS

PDF

11.7 KB
MD5: 69017ac6d374c0aab5f450425dba4306 SHA-1: d303449fa47a1f274734fecf61cfae0b3fb9a9c6 SHA-256: 53d5655da854a3bb379206278083892adc3e3d39f9839f749918f696c376942b
96 Risk Score

Malware Insights

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

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. The embedded URLs are related to XFA forms, which are known to be exploited in PDFs.

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
27309e335049c9fd10331d5fed715fcc3c889fa47ab7b7d5b269107dfa685d21		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11207 bytes

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