That is a reasonable possibility given the low detection rate at VT.
Send the sample to virus@avast.com zipped and password protected with the password in email body, a link to this topic might help and possible false positive in the subject.
I believe that this is likely to be a big file that you wouldn’t want to send by email, etc. You can raise an email (without a sample) to the same address and post the information contained in your topic. Probably worth including the url of the topic also.