There is a 7zip command utility for macOS, but I haven't found a magic incantation that will allow it to extract a file out of the vmdk. If I try to list contents of the .vmdk file, it comes back with the GPT partitions that are available in the virtual disk. 

It's not that hard to build a Windows (or Linux) VM and attach the vmdk to the VM, mount the ntfs file system, and extract away...