VCF is an acronym for Virtual Contact File. VCF files, also commonly referred to as vCards, are the standard file format that is used to store contact information for individuals and businesses in a digital file format.
A VCF file normally includes the contact name, address, email address, phone number and other contact information for the person creating the file. The VCF file format also allows for the support of images and other media content.
VCF files are often used to transfer contact information between address books and can also be attached to email messages. VCF files can be used on Windows and Mac operating systems and are frequently used on iPhones to load contacts directly into the user's mobile device.
VCF File - What is it and how do I open it?
If you don't want them - delete them.