Medium Severity

Link: Concatenated display text concealing duplicate URLs with PDF reference

Labels

Credential Phishing
Evasion
Social engineering
Content analysis
URL analysis

Description

Detects messages where two identical links are displayed as a single continuous text string, with the second link containing 'PDF' in its display text. This technique can be used to obscure the true nature of links by making them appear as legitimate document references.

References

No references.

Sublime Security
Created Jun 12th, 2026 • Last updated Jun 12th, 2026
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and strings.contains(body.current_thread.text,
                     strings.concat(body.current_thread.links[0].display_text,
                                    body.current_thread.links[1].display_text
                     )
)
and body.current_thread.links[0].href_url.url == body.current_thread.links[1].href_url.url
and strings.icontains(body.current_thread.links[1].display_text, 'pdf')
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