I'm not sure about a specific 'hermione is a malfoy fanfic' title, but in general, in these types of fanfics, the writers often play with the idea of Hermione breaking down Malfoy's prejudiced exterior. They might be forced to work together on a school project in a fanfic, like in 'Project Partners'. As they collaborate, they start to understand each other better. Hermione's intelligence might intrigue Malfoy, and Malfoy's family background could add an element of mystery for Hermione.
Well, there's 'The Malfoy - Hermione Connection'. In this fanfic, it starts with a simple interaction, like a chance meeting in the library. Hermione is researching some advanced magic, and Malfoy stumbles upon her. Their initial exchange is full of the usual banter, but then things start to change. The story progresses as they keep running into each other in different situations around Hogwarts, and slowly, a bond begins to form between them that neither expected.