I agree it is an annoying situation and understand your frustration, however this jam simply can't t accept entries which are actively identified as a virus by common anti-virus programs.
If you still wish to use PureBasic for your project, there do appear to be some things you can do to help your executable pass common virus scans. The PureBasic forums are full of posts with developers talking about things they have done to solve this problem. Try searching there for a solution. Here's one example:
https://www.purebasic.fr/english/viewtopic.php?t=72466
And here's a web site that can help you check if your exe file will get flagged by common anti-virus software.
There are many, many anti-virus programs so hitting a few false positives probably is unavoidable, but if you could get the exe to pass the most common ones (McCafee, MS Defender, BitDefender, AVast, Kaspersky, Norton, Trend Micro, etc) it'd be acceptable for this jam.