From the VT info given it seems to be a steam file

========================================================
CopyrightCopyright (C) 2013-2015 tapek+rvt (aka deadmau5)@REVOLT
Product SteamAPI
Original name steam_api.dll
Internal name steam_api.dll
File version 0.8.6.0
Description REVOLT SteamAPI Wrapper

and as said your VT scan result was old, meaning it was previous uploaded (VT ask to see last scan result)
Analysis date: 2017-07-06 13:47:28 UTC ( 2 weeks ago )
Always click the rescan button for a fresh result