The file that downloads is a torrent. You need a torrent client to download. Be sure you read the instructions and follow them.
Also there are some issues, possibly viruses or false positives. VirusTotals and links below before you proceed. Backup or Run in sandbox mode if you are really worried.
VirusTotal: https://www.virustotal.com/en/file/...c2a32a505878b8abe8bae343bc8cd16376c/analysis/Code:Select AllSHA256: ed0e1f9eac2226d592f0cc43d1560c2a32a505878b8abe8bae343bc8cd16376c File name: ewsa_setup_en.msi
VirusTotal: https://www.virustotal.com/en/file/...ba83693198bfc88d285fec678a0c098ae46/analysis/Code:Select AllSHA256: 028efc0b32672b1b3fad449d872e4ba83693198bfc88d285fec678a0c098ae46 File name: reegg.reg
VirusTotal: https://www.virustotal.com/en/file/...c791639798612c31a592cfed936e2d260c5/analysis/Code:Select AllSHA256: 9c9c67a1b078c498e29c700885100c791639798612c31a592cfed936e2d260c5 File name: EWSA.exe
Code:Select AllAvira TR/Crypt.XPACK.Gen2 20160101 Bkav HW32.Packed.FC49 20151231 Ikarus Trojan.Crypt 20151231 McAfee Artemis!7BB45E49A735 20160101 McAfee-GW-Edition BehavesLike.Win32.PWSZbot.rc 20160101 Qihoo-360 Win32/Trojan.97a 20160101 Rising PE:Malware.XPACK/RDM!5.1 [F] 20160101 ViRobot Trojan.Win32.A.StartPage.13391360[h] 20160101 Zillya Tool.ExtenBro.Win32.18131 20151231
Elcomsoft Wireless Security Auditor 6.4.416
To recover the original WPA/WPA2-PSK passwords