• Sublime Core Feed
High Severity

ClickFunnels link infrastructure abuse

Labels

Credential Phishing
Free email provider
Free subdomain host
Social engineering
Content analysis
Header analysis
QR code analysis
Sender analysis
URL analysis

Description

Email contains a ClickFunnels (mass mailing platform) tracking link but does not originate from ClickFunnels sending infrastructure. The myclickfunnels.com domain has been abused by threat actors to attempt credential phishing.

References

No references.

Sublime Security
Created Oct 8th, 2024 • Last updated May 16th, 2025
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and (
  (
    length(body.links) < 15
    and any(body.links, .href_url.domain.root_domain == "myclickfunnels.com")
  )
  or (
    length(attachments) <= 3
    and (
      any(attachments,
          (.file_type in $file_types_images or .file_type == "pdf")
          and any(file.explode(.),
                  .scan.qr.type is not null
                  and .scan.qr.url.domain.root_domain == "myclickfunnels.com"
                  // exclude images taken with mobile cameras and screenshots from android
                  and not any(.scan.exiftool.fields,
                              .key == "Model"
                              or (
                                .key == "Software"
                                and strings.starts_with(.value, "Android")
                              )
                  )
                  // exclude images taken with mobile cameras and screenshots from Apple
                  and not any(.scan.exiftool.fields,
                              .key == "DeviceManufacturer"
                              and .value == "Apple Computer Inc."
                  )
          )
      )
      or (
        length(attachments) == 0
        and any(file.explode(beta.message_screenshot()),
                .scan.exiftool.image_height < 2000
                and .scan.exiftool.image_width < 2000
                and .scan.qr.type is not null
                and .scan.qr.url.domain.root_domain == "myclickfunnels.com"
        )
      )
    )
  )
  or (
    length(attachments) <= 3
    and (
      any(attachments,
          (
            .file_type in ("pdf")
            or .file_extension in ("pdf", "eml")
            or .file_extension in $file_extensions_macros
            or .content_type in ("message/rfc822")
          )
          and any(file.explode(.),
                  any(.scan.url.urls,
                      .domain.root_domain == "myclickfunnels.com"
                  )
          )
      )
    )
  )
)
and not (
  any(headers.domains, strings.ends_with(.domain, "mailer.myclickfunnels.com"))
  or (
    (
      any(headers.hops,
          .index == 0
          and any(.authentication_results.dkim_details,
                  .domain == "mailer.myclickfunnels.com"
          )
      )
    )
    and any(distinct(headers.hops, .authentication_results.dmarc is not null),
            .index == 0
            and strings.ilike(.authentication_results.dmarc, "*pass")
    )
  )
)
// negating legit replies
and not (
  (
    strings.istarts_with(subject.subject, "RE:")
    or strings.istarts_with(subject.subject, "FW:")
    or strings.istarts_with(subject.subject, "FWD:")
    or strings.istarts_with(subject.subject, "Automatic reply:")
  )
  and (
    length(headers.references) > 0
    and any(headers.hops, any(.fields, strings.ilike(.name, "In-Reply-To")))
  )
)
// negate highly trusted sender domains unless they fail DMARC authentication
and (
  (
    sender.email.domain.root_domain in $high_trust_sender_root_domains
    and (
      any(distinct(headers.hops, .authentication_results.dmarc is not null),
          strings.ilike(.authentication_results.dmarc, "*fail")
      )
    )
  )
  or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)
and profile.by_sender_email().prevalence in ("new", "outlier", "rare")
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