Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb7eefacf2d6d0f…

MALICIOUS

PDF

19.4 KB
MD5: 79c438e1572e2832166101559a2ba789 SHA-1: e250b38ff9ffa83aa1f26236ac5e3fd82641d05f SHA-256: 3eb7eefacf2d6d0fc3fa769399d8bf9d3dfc5dfb987571e9ca46b95c041f98ad
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-78' strongly indicates malicious intent. The PDF contains embedded script payloads and an embedded file, suggesting it's designed to exploit vulnerabilities and drop further malware. The presence of XFA form elements and embedded URLs, while some are benign, are common in 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
7ece30102543291b8ae32b9ab49f6d80d48056f2582854aaa1e6929abba8b930
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19156 bytes