Spam: Mastercard promotional content with image-based body

type.inbound
and length(attachments) == 0
and not subject.is_forward
and any(ml.nlu_classifier(beta.ocr(file.message_screenshot()).text).topics,
        .name == "Financial Communications"
)
and any(ml.nlu_classifier(beta.ocr(file.message_screenshot()).text).topics,
        .name == "Advertising and Promotions"
)

// mastercard mention
and strings.icontains(beta.ocr(file.message_screenshot()).text, "mastercard")
and not strings.icontains(beta.ocr(file.message_screenshot()).text,
                          "paying with mastercard"
)

// body is image
and (
  length(beta.ocr(file.message_screenshot()).text) / length(body.current_thread.text
  )
) > 10
and length(body.previous_threads) == 0

// negate highly trusted sender domains unless they fail DMARC authentication
and (
  (
    sender.email.domain.root_domain in $high_trust_sender_root_domains
    and not headers.auth_summary.dmarc.pass
  )
  or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)