← All detection heuristics · Social engineering
high
PDF_UTILITY_REFUND_OFFDOMAIN_LURE
What it means
A utility overpayment or refund notice directs the recipient to unrelated hosting.
Why it fires
Utility branding, refund language, and a mismatched actionable destination form a phishing pattern.
Other Social engineering heuristics
SE_BOOKING_COMPLAINT_PHISH PDF_FAKE_DOCUMENT_COMPONENT_INSTALLER OOXML_QR_CREDENTIAL_PHISH SE_CALLBACK_SCAM_TEMPLATE PDF_BRAND_ACCOUNT_UPDATE_REDIRECT_LURE PDF_IMAGE_REPEATED_DECOY_REDIRECT_LURE PDF_IMAGE_DOCUMENT_REVIEW_HOST_LURE PDF_LOCALIZED_DOWNLOAD_HOSTING_LURE PDF_MINIMAL_VIEW_DOCUMENT_REDIRECT PDF_NESTED_ENCODED_CROSSHOST_REDIRECT PDF_RFP_EXTERNAL_ACTION_LURE PDF_SPARSE_MOVED_ARTICLE_DOORWAY