Add button next to a characteristic

-- HikaShop version -- : 6.5.1
-- Joomla version -- : 6.1.2

Hi!

Is it possible to add a button next to one characteristic?
For example there are 4 characteristics in this product, one of them is color.
What i want, is to add a button that opens a PDF file next to it with details of the colors.

Thank you