Be Secure, we've checked the backends, according to their logs we don't see the file as being downloaded from web (there is not URL field in the logs).
Of course, this can be some kind of an error in the processing. Could you, please, specify how you've downloaded the file? Was that a direct download (click on the url), or some other mechanismus (e.g. some downloader). What make of the browser did you use to download the file? Thanks a lot,
Lukas.