The VT Results page you posted is from a very old scan, autorun.inf received on 2009.11.17, so when it says that it has been scanned before you should always have it rescanned as that old scan didn’t even have avast detecting it.
I have been using avast for over five and a half years and it has no need to pull strokes like you suggest to get people to either register or renew, it is a good AV and has no need to resort to underhand practices.