Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b077900203ef4f3…

MALICIOUS

PDF

19.2 KB
MD5: ea650e9f7519a6e6bf8c1d0d3ced48ac SHA-1: 02925691a96b039d04e4c351f036e047cacc5f96 SHA-256: 6b077900203ef4f3fb99b42a33d9f618b48ca4aa5a81714dc3ffcf292b7c2c4f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded script content and is flagged by multiple heuristics, including ClamAV detection for 'Pdf.Exploit.Dropped-78' and a high ML score. This indicates the file is designed to exploit a vulnerability, likely for client execution, and deliver a secondary payload. The embedded file artifact further supports this.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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 script payload in PDF stream low 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 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
60d5e9732e9810e5757350450146590637db426b39815cd25868d040f22eaf92		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18942 bytes

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