Malicious PDF — malware analysis report

Static analysis result for SHA-256 35687be538fbe23c…

MALICIOUS

PDF

11.8 KB
MD5: 62eaa4d6210430b994fc39da8487f6d8 SHA-1: d6d01000810515f9a7648bb3f07e4f5359c93eda SHA-256: 35687be538fbe23cba132d1d143a40da2a9a4da13c16a3b53a1699e19d702e51
96 Risk Score

Malware Insights

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

The PDF file contains embedded script payloads and has been flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it is likely an exploit dropper. The presence of embedded files and XFA forms further supports its malicious nature. The embedded URLs, while not directly malicious, are part of the document's structure.

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
3842caabc6acd35d402ea1757f33cab31952b6c56d4a534c78450fb3c8c0df3c
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11335 bytes