Resize a book cover in PDF from B5 to A4

Job ID: 33836331

Budget: $30 – $250 AUD

I have a book cover in B5 size, however I would like to change this to A4 size.

I ONLY HAVE A PDF FILE! I do not have InDesign files since the person who used to do my role didn't transfer over the files.

The front and back covers need to be enlarged to A4 size, while the spine needs to be stretched to A4 height but keep the same width. The font may be changed.

I have 2 book covers that require this.