Example attached from common crawl
EP6WR43YSZWA6UWRME44UJRUWHGMTR7A.xlsb (application/vnd.ms-excel.sheet.binary.macroEnabled.12), 12.68 KB, created by Tim Allison on 2017-04-27 18:38:09 UTC
Creator: Tim Allison
Created: 2017-04-27 18:38:09 UTC
Size: 12.68 KB

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Attachments on bug 61051: 34961