Malicious PDF — malware analysis report

Static analysis result for SHA-256 39303452bad62b3e…

MALICIOUS

PDF

11.7 KB
MD5: 767bed10869ab08719d88aba5102de17 SHA-1: c6b9f34bbd73756372b25c5a90b9dc1c4bae1639 SHA-256: 39303452bad62b3edd306bb1933ee25827f26a172df764e38e1499206d58588a
96 Risk Score

Malware Insights

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

The PDF contains embedded content and a script payload, as indicated by the PDF_EMBEDDED and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detection as Pdf.Exploit.Dropped-78 strongly suggests malicious intent, likely involving the delivery of a secondary exploit or malware. The embedded file and script are the primary vectors for this attack.

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
62558efc69b42cb3908e156a16b98ccaae98102fff154db306a0c7baf418769b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11184 bytes