Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c58621fa3347a4…

MALICIOUS

PDF

11.8 KB
MD5: 45d85eef5b63d1a11991b3cc5b3db642 SHA-1: aef571e25317b8b0fa8eae5b7832a0e79f70d5f7 SHA-256: e4c58621fa3347a4f7ca39d219fdd1965d2d130b8a8cd345184f6023bfd979b2
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 and likely drops a secondary payload. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to exploit vulnerabilities and execute malicious code upon opening. The embedded file artifact is likely the dropped 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
c2bac8868a084433bd9ddab85b31885f13525411d9bd521d6410085406b847b6
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11375 bytes