Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9133f7684808e3e…

MALICIOUS

PDF

11.7 KB
MD5: 6370a1bcbe8d19c02811b1070faa45f3 SHA-1: 44f4b0c3724c7f4efab6de3e65cac988b74363fd SHA-256: e9133f7684808e3eacf8ecdb43cbaf993745ff8d365131b4843ee96d287f8b73
96 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as 'Pdf.Exploit.Dropped-78', indicating it contains an exploit. Static analysis revealed an embedded script payload and an embedded file, both common techniques for delivering secondary malware. The presence of XFA forms also suggests a potential attack vector. While no specific family was identified, the techniques point to a malicious PDF dropper.

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
fb75994142631cb80677fb2323454b6b611ef9e080954ec85c3e64a35f03d636
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11178 bytes