Suspicious submission a big file

Hello colleague,

please help me to understand how I can submit suspicious a big files > 100MB to Symantec Security Response.

In online submission form https://submit.symantec.com/websubmit/retail.cgi I set File Submission or URL submission but - "File found at the URL is over size limit (20MB)".

After Petya ransomware outbreak my customer wants to check all the files of external developers in SR using a direct link to the application.