Attachment: HTML file with excessive padding and suspicious patterns

type.inbound
and any(attachments,
        (
          .content_type == "text/html"
          or .file_extension in~ ("html", "htm", "shtml", "dhtml")
          or .file_type == "html"
        )
        and any(file.explode(.), any(.scan.yara.matches, .name == "HTML_EXCESSIVE_PADDING"))
)