Search in non OCRed pdfs

I have about 10K non OCRed pdfs, and I want to pick up all that contain the name of the  company "Fedex".

If I try to apply OCR before advanced search process it will take great amount of time, the pdfs are 100 pages and more.

But the thing is that keyword located in the beggining of the first page of the document. Is there any method to select all files contating the keyword without OCR of the whole document?