Source download install detected virus


Hello,


I buy license and download source install. But browser and defender on windows blocked with warning download failed virus detected. The source trust, pls tell me why?


https://download.bitdefender.com/windows/installer/en-us/bitdefender_antivirus.exe?adobe_mc=MCMID%3D72760608541317353381665761618957083619|MCORGID%3D0E920C0F53DA9E9B0A490D45%40AdobeOrg|TS%3D1546264682


Thank so much and happy new year!