Ubuntu font package fonts-nanum-extra

You can install these fonts by opening a terminal and executing sudo apt-get install "fonts-nanum-extra"

Nanum Brush Script font family with style Normal
/usr/share/fonts/truetype/nanum/NanumBrush.ttf

Nanum Pen Script font family with style Normal
/usr/share/fonts/truetype/nanum/NanumPen.ttf

NanumBarunGothic font family with style Normal
/usr/share/fonts/truetype/nanum/NanumBarunGothicLight.ttf

NanumBarunGothic font family with style Normal
/usr/share/fonts/truetype/nanum/NanumBarunGothicUltraLight.ttf

NanumBarunpen font family with style Normal
/usr/share/fonts/truetype/nanum/NanumBarunpenR.ttf

NanumBarunpen font family with style Normal
/usr/share/fonts/truetype/nanum/NanumBarunpenB.ttf

NanumGothic font family with style Normal
/usr/share/fonts/truetype/nanum/NanumGothicLight.ttf

NanumGothic font family with style Normal
/usr/share/fonts/truetype/nanum/NanumGothicExtraBold.ttf

NanumMyeongjo font family with style Normal
/usr/share/fonts/truetype/nanum/NanumMyeongjoExtraBold.ttf

NanumSquare font family with style Normal
/usr/share/fonts/truetype/nanum/NanumSquareEB.ttf

NanumSquare font family with style Normal
/usr/share/fonts/truetype/nanum/NanumSquareL.ttf

NanumSquareRound font family with style Normal
/usr/share/fonts/truetype/nanum/NanumSquareRoundEB.ttf

NanumSquareRound font family with style Normal
/usr/share/fonts/truetype/nanum/NanumSquareRoundL.ttf