Is it a forum Policy not to allow a link to a File sharing site to such documents? Or is it permitted if the reasons are clearly stated, and they could be helpful for reference in a post.
In general I prefer when users don't post (either as links or attachments) other file types than pdf, jpg, gif and png - these are typically enough to clearly state the question and give us enough information. In the case of regulars I am ready to accept a bit more.
I expect the alternative of offering to supply a File per Email attachment is out of the spirit of keeping everything open within the Forum?
Asked on forums, answered on forums. Besides, malware sent by an email still counts as a malware, and you will probably have a hard time convincing other forums users to share their emails with you.