Adding Times New Roman font in Okular

I got a PDF with two fonts that aren't embedded: Arial and Times New Roman. On Okular, they are substituted by other fonts which I don't like. Then, I've added those Microsoft fonts to my machine with sudo apt install ttf-mscorefonts-installer. It looks like Arial is now correctly used but not Times New Roman (see PDF properties below).

Under /usr/share/fonts/truetype/msttcorefonts/, I do see the fonts:

• Times_New_Roman_Bold_Italic.ttf
• Times_New_Roman_Bold.ttf
• Times_New_Roman_Italic.ttf
• Times_New_Roman.ttf

Is there a way to force Okular to use those?