Malicious PDF — malware analysis report

Static analysis result for SHA-256 9515b1673d7db5b7…

MALICIOUS

PDF

18.3 KB
MD5: fe227beed04b469238712f6be2875c8d SHA-1: 6189a48b97666bd20a570eb943ce88e401681db4 SHA-256: 9515b1673d7db5b7ad392c8a3709ccd8de3b0f1b41fd06e01bfcf3474ab66de3
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. The presence of an embedded script payload and an embedded file further supports this. The embedded URLs are not directly indicative of malicious activity, but the critical ClamAV detection is the primary driver for this assessment.

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
329f2fa962042355ec178ea7a8229870825345822a311b8f480f69392bdf33c9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18011 bytes