use Viruses and Worms forum section for reporting false positives and malware problems
you can report to avast lab here https://support.avast.com/ → avast virus lab
URL given above is blacklisted, see info here https://www.virustotal.com/en/url/fe732938fcc915d745cd5f3d68c5728846f8cbe3aa81058723b541418306166b/analysis/1442217552/
file scan https://www.virustotal.com/en/file/47e027311086b621548cc5acf783dd990e12373c34f1260bea4489cddd6cdf88/analysis/1442245332/
https://www.metascan-online.com/#!/results/file/76f881c101724f28bd72b1b90bca8f92/regular
Advanced heuristic and reputation engines
TrendMicro-HouseCall TROJ_GEN.R03EC0OHK15. Symantec reputation Suspicious.Insight