advisor - In a 5 years PhD, is it possible to get a postdoc position with one publication? I can really use some advice

I am a 5th year Mechanical engineering PhD.

I just have 1 published paper and 3 others are pending with my advisor

I was wondering if I can get some advice on what should my approach towards postdoc applications without publications be like? Almost all of the positions requires sending a reference work to prove for competence.