Medium Severity

Service abuse: Amazon invitation with suspected callback phishing

Description

Detects Amazon's no-reply address with a subject about invitation sending, containing phone numbers within HTML header elements. This pattern is commonly used to trick recipients into calling fraudulent customer service numbers.

References

No references.

Sublime Security
Created May 22nd, 2026 • Last updated May 22nd, 2026
Source
type.inbound
and sender.email.email == 'no-reply@amazon.com'
and subject.base == 'Your invitation has been sent'
and any(html.xpath(body.html, "//h2[contains(@class, 'rio-header')]").nodes,
        // phone number regex
        regex.icontains(strings.replace_confusables(.display_text),
                        '\+?(?:[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}'
        )
)
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