Callback phishing via Yammer comment

type.inbound
// message from Yammer sending infratructure
and sender.email.domain.root_domain == 'yammer.com'
and length(body.current_thread.text) < 2000

// Callback Phishing
and (
  any(ml.nlu_classifier(body.current_thread.text).intents,
      .name in ("callback_scam")
      and .confidence in ("medium", "high")
  )
  or 3 of (
    strings.ilike(body.current_thread.text, '*purchase*'),
    strings.ilike(body.current_thread.text, '*payment*'),
    strings.ilike(body.current_thread.text, '*transaction*'),
    strings.ilike(body.current_thread.text, '*subscription*'),
    strings.ilike(body.current_thread.text, '*antivirus*'),
    strings.ilike(body.current_thread.text, '*order*'),
    strings.ilike(body.current_thread.text, '*support*'),
    strings.ilike(body.current_thread.text, '*help line*'),
    strings.ilike(body.current_thread.text, '*receipt*'),
    strings.ilike(body.current_thread.text, '*invoice*'),
    strings.ilike(body.current_thread.text, '*call*'),
    strings.ilike(body.current_thread.text, '*cancel*'),
    strings.ilike(body.current_thread.text, '*renew*'),
    strings.ilike(body.current_thread.text, '*refund*')
  )
)
// phone number regex
and any([body.current_thread.text, subject.subject],
        regex.icontains(.,
                        '\+?([ilo0-9]{1}.)?\(?[ilo0-9]{3}?\)?.[ilo0-9]{3}.?[ilo0-9]{4}',
                        '\+?([ilo0-9]{1,2})?\s?\(?\d{3}\)?[\s\.\-⋅]{0,5}[ilo0-9]{3}[\s\.\-⋅]{0,5}[ilo0-9]{4}'
        )
)
// negate benign threads
and not any(ml.nlu_classifier(body.current_thread.text).intents,
          .name == "benign" and .confidence == "high"
)