This seems like a false positive?
Resetera is a very popular gaming forum and there's no reports of it being malicious.
Sorry for my reply. I'm also only F-Secure user (their home solutions).
It is possible to use F-Secure SAS:
With "I want to give more details about this sample and to be notified of the analysis results"-option possible to provide mail-address and receive response F-Secure Labs.
Just like my own unofficial feelings:
It is likely to meet false positive, but I think that too popular services (forums/werbsites/pages) much more interesting for 'hidden' hack rather than something which possible to detect briefly.
Also, since it is 'forum' - maybe user's content is public available and such content can be with 'tricky payload'.
// I tried to look a little be for indexed pages of noted URL. And there was some of strange "redirect" parameter for one of their URL - so - I decided to re-check domain for 'redirect' keyword.
Then there is multiple topics with words like:
""Are the admins aware there are redirects from ads?""
""Anyone else getting those bogus Amazon redirect ads?""
""Redirect Ads on Iphone ""
And so on. Sounds that such topics are pinned to this forum. Maybe it is partly reason for such Harmful-rating.