The safest, legal, and most reliable way to obtain the Xrv9k-fullk9-x-7.1.1.qcow2 image is directly from Cisco. Go to the portal (cisco.com).
You must disable "Lazy Page Allocation" in the .vmx file. Add this line: Xrv9k-fullk9-x-7.1.1.qcow2 Download