Searching for a "CIDFont+F4" download can be confusing because you can download; it is a generic placeholder generated by PDF software (like Adobe Acrobat or InDesign) when a real font is embedded or encoded using Character Identifier (CID) technology. Understanding CIDFont+F4
If you are seeing this name, it is likely because of one of the following: PDF Substitution: cidfont f4 font verified free download
References (suggested)
You might need CIDFont F4 for several reasons: CIDFont+F4 is not a specific font name Searching