4 of 6Image
That red background and the big icon at the top are visually similar to actual security warnings that Google Chrome uses. The malware author has also inserted a reference to Google Chrome in this fake "scanning" screen.
Ultimately, this social-engineering attack is likely to fail with an English-speaking victim, who should be suspicious of the bad grammar. But a user whose primary language is something other than English might well be fooled.
It doesn't matter which button you click--the program is going to try to download a dangerous file to your computer. If you click Allow or Save here, you're that much closer to being owned.