Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d69c7e4b760e55…

MALICIOUS

PDF

26.2 KB
MD5: 698cad08e9ac6b446a0976fa85cb02eb SHA-1: ab9d7362878cbbaae7a937d6fcbfcaf4bd22e1c8 SHA-256: a3d69c7e4b760e551c362b847d4003703108ed76c5c4cce6c09cff1ec71ed144
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1566.002 Phishing: 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. While no specific document body text or scripts were extracted for detailed analysis, the heuristics strongly suggest this PDF is designed to exploit a vulnerability and deliver a secondary payload.

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
c5a3a3d3768d320f1dbe8c92609553864a3db1443f50667cecd3e2c525455fda
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 26072 bytes