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