Often, yes. Many distributors rename "Cid Heavy" or "Cid Black" to "Cid F3" for simplicity. Always check the font properties.
For a tech or racing novel, yes. For literary fiction, no – the font is too aggressive. Cid Font F1 F2 F3 Free Download
Avoid unknown file-hosting sites, torrents, or sites that bundle installers or extra software. Often, yes