While you may find "free" installers on various third-party mirror sites, there are significant caveats:
Foxit PhantomPDF Business 9.7 is not freeware . Official versions are typically "Demo" or "Trial" versions that require a license key for full functionality.
Released in late 2019, version 9.7 was a major milestone for Foxit. It was the industry’s first "Robotic Process Automation-ready" PDF editor. It introduced several high-end business features, including:
Downloads from unofficial sites or "cracked" versions are often bundled with malware or spyware.
Users could create and email PDFs directly from the Microsoft Project ribbon.