Malicious PDF — malware analysis report

Static analysis result for SHA-256 820db470717eb8a4…

MALICIOUS

PDF

19.0 KB
MD5: 82ba23d20a8236ff92ae7a8986015a10 SHA-1: 19ada9f73ecccd0141dfd8fd04873f7cce8d518a SHA-256: 820db470717eb8a4b2baee0e1d7544c1e4c854cb19439671560c739276b82417
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious and designed to exploit vulnerabilities. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF acts as a dropper for a secondary malicious component. The specific exploit or payload is not detailed in the provided evidence.

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
82ec11f81e633cd26b767b5cb57c57938f1861348efe355d884595a8be72c4a7
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18706 bytes