How to safely browse malicious .vhd file?

My wife has received an unexpected invoice from an unknown company, with the invoice being in a .vhd format. Quick google search confirmed my suspicion that it is a scam, but now I'm curious what's actually inside that virtual drive.

Are there any safe options to open that drive and peek inside? I have 2 ideas - mount it inside WSL, or mount it in in a virtual Linux machine inside VirtualBox, but I'm not savvy enough to know if either of these two indeed are safe for host OS...