Wecome to autodesk community and I will help you with your installation issue.
From the log file, I can see the .net framework installation is successful. The error happens during installing AutoCAD with the error code 1603, this type of error generally related to your user rights,so I would give you the following suggestions:
1 Please try to install your Autodesk Product with an admin user. I recommand the default system Administrator user.
2 Please turn off the antivirus and firewall application.
3 Please turn off UAC if your OS is Windows vista/7.
4 Try to copy the installation file to your local harddisk and install from there.
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