Real-world example: In 2022, cybersecurity researchers identified a “Foxit PhantomPDF Business v10.1.0.37527 fix repack” circulating on torrent sites that included the malware, which harvested browser passwords, cookies, and cryptocurrency wallets.
(v10.1.0.37527) that has been modified ("repacked") to include a pre-applied "fix" (typically a crack or patch) for software licensing Foxit PhantomPDF Business has since been rebranded as Foxit PDF Editor Pro Key Features of Version 10.1.0.37527