According to my Dell 4500 NSA series firewall, and its subscription services, this link https://labs.vmware.com/flings/vmware-os-optimization-tool has the ZBOT TROJOAN when clicking on the RED hyperlink to download the file.
WARNING DO NOT DOWNLOAD OR CLICK ON THE RED HYPERLINK UNTIL SOMEBODY AT VMWARE CAN EXPLAIN.
until then, I am going to trust my Dell 4500 NSA series firewall and its subscription services and not ever download this file as it could infect my master images and push Trojans out to all of my linked clones.
This was stopped by my firewall scanning for viruses 'on the wire' when attempting the download and not via my antivirus software on my client.