The best thing to do before installing the application is to scan it against a dozen of antivirus applications. You can do this using the VirusTotal service.
VirusTotal tests packages in a safe environment using 54 antivirus solutions. Access the service using the following link, then upload the executable file.
The website will tell you exactly how the package contains then you can add it to the exception list in Symantec and continue with the installation.