Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88fb66b9770c185…

MALICIOUS

PDF

26.3 KB
MD5: 8feae460b2f8196163fade40f7012c24 SHA-1: 4f577d6ce3afc9140d2b144845db7c34230e7c8f SHA-256: f88fb66b9770c185d407ec4c2f20aa07d5d527bec5955d8e0cdd6c41eda238cb
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates malicious intent. The PDF contains an embedded script payload and an embedded file, suggesting it's designed to exploit vulnerabilities and download further malicious content. The presence of XFA form elements and embedded files are common characteristics of exploit-laden 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
2762f36d65b72ab2173f7eebae2f2244ab4b9a038c38a6cf13b8b22540c6ec05
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 26134 bytes