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Description

Detects PDF attachments created with wkhtmltopdf or Qt that contain LinkedIn's headquarters address (1000 W Maude Ave) in financial communications context, but do not mention LinkedIn itself.

References

No references.

Sublime Security
Created Sep 3rd, 2025 • Last updated Sep 3rd, 2025
Source
type.inbound
and 0 < length(filter(attachments, .file_type == "pdf")) < 3
and any(filter(attachments,
               .file_type == "pdf"
               // creator and producer of PDF seen in malicious content
               and (
                 strings.starts_with(beta.parse_exif(.).creator, "wkhtmltopdf")
                 or strings.starts_with(beta.parse_exif(.).producer, "Qt ")
               )
        ),
        any(filter(file.explode(.), .scan.ocr.raw is not null),
            // contains LinkedIn HQ address but not from LinkedIn
            (
              strings.icontains(.scan.ocr.raw, "1000 W Maude Ave")
              and any(beta.ml_topic(body.current_thread.text).topics,
                      .name == "Financial Communications"
                      and .confidence != "low"
              )
              and not strings.icontains(.scan.ocr.raw, "linkedin")
            ),
        )
)
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