If you want a one-click solution, several open-source projects bundle all necessary CID-keyed fonts that cover F1–F6 (and sometimes F7 mapped to a generic fallback).
A (Character Identifier font) is not a single downloadable font but a technical format used in PDF files to support large character sets, such as Asian languages or complex symbols. CID font F1 F2 F3 F4 F5 F6 F7 Fonts Free Download
/BaseFont /F1 /DescendantFonts [ 8 0 R ] /Subtype /Type0 /Encoding /Identity-H If you want a one-click solution, several open-source