Malicious PDF — malware analysis report

Static analysis result for SHA-256 de1307833894999c…

MALICIOUS

PDF

11.8 KB
MD5: 44d6d91ec7edb8a53529c1a680588f41 SHA-1: 9813633ae8e4af4ccae10f41ff8f2ccca3c37cdb SHA-256: de1307833894999cf3fa1c654fe528cdc22f9b0547dfec9a3d3829b8985df180
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 indicators of the attack vector.

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
d06de1d10ae3603fe184e25720327a386a40d5c244d09abc75e6c332cba3332d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11335 bytes