The zip file contains an ex4 file which is the compiled output of compiling an mq4 source file. He's hiding his "secret" whatever it is. LOL I just did some googling of "pz goldfinch ea". It's been buzzing around for years on click-bait sites.
So he's trying to sell something without paying Baron? Thanks, I'll report it. Should have known, 1 post wonder.
Beware the one post wonders on here...especially those who hawk a system but never bother to answer questions or criticism.