The PF file extension is associated with Stuffit Deluxe. PF file is private password file, it requires a password to decrypt. PF file is also a compressed file, it is used for compress some confidential information or personal data.
The PF file extension is associated with Prefetcher, a component of Windows Memory Manager. PF file contains a trace log. PF file can speed up the boot process and application loading. PF files are typically stored in the \Windows\Prefetch\ directory.