Link: Free file host links from suspicious support sender with credential theft language

type.inbound
and sender.email.local_part == 'support'
and 1 < length(filter(body.current_thread.links,
                      not regex.icontains(.href_url.url,
                                          '\.(pdf
| doc
| docx
| csv
| xls
| xlsx
| ppt
| pptx)'
                      )
               )
) <= 5
and all(body.current_thread.links,
        .href_url.domain.root_domain in $free_file_hosts
        or .href_url.domain.domain in $free_file_hosts
)
and any(ml.nlu_classifier(body.current_thread.text).intents,
        .name == 'cred_theft' and .confidence != 'low'
)
and any(ml.nlu_classifier(body.current_thread.text).topics,
        .name == 'File Sharing and Cloud Services' and .confidence != 'low'
)
// negate highly trusted sender domains unless they fail DMARC authentication
and not (
  sender.email.domain.root_domain in $high_trust_sender_root_domains
  and coalesce(headers.auth_summary.dmarc.pass, false)
)