Attachment: Link to Doubleclick.net open redirect

type.inbound
and length(body.links) == 0
and any(attachments,
        (.file_type in ("pdf", "doc", "docx"))
        and any(file.explode(.),
                any(.scan.url.urls,
                    .domain.root_domain == "doubleclick.net"
                    and (
                      strings.icontains(.path, "/aclk")
                      or strings.icontains(.path, "/pcs/click")
                      or strings.icontains(.path, "/searchads/link/click")
                    )
                    and regex.icontains(.query_params,
                                        '&(?:adurl|ds_dest_url)=(?:[a-z]+(?:\:|%3a))?(?:\/|%2f)(?:\/|%2f)'
                    )
                )
        )
)