Attachment: HTML file with eval function and long byte string (Unsolicited)

type.inbound
and any(attachments,
  (
    regex.imatch(.file_extension, '^[sdx]{0,1}ht[ml]{0,2}$') or
    .file_extension in~ $file_extensions_common_archives or
    .file_type == "html"
  )
  and any(file.explode(.),
    any(.flavors.yara, . == "javascript_file") and 
    any(.scan.strings.strings, 
      regex.icontains(., "eval") and 
      length(.) > 500 and 
      regex.icontains(., '(.*\\x\w\w.*){20}')
    )
  )
)
and (
  not profile.by_sender_email().solicited
  or sender.email.domain.domain == "delivrto.me"
)