I have researched below libraries for view PDF , please check below all libraries
PDF Viewers
PDF Viewer Library
Name : PDF Viewer Library
Link : https://github.com/jblough/Android-Pdf-Viewer-Library
Desc : This library is under LGPL licence
PDF Viewer Android Offline
Name : PDF Viewer Android Offline
Link : https://github.com/bitfield66/PdfViewerAndroid_Offline
Desc : This library will take MuPDF Library as base and modified it under GPL Licence
PDF Viewer (Under General Public Licence)
Name : PDF Viewer
Link : https://github.com/rameshakulapc/PDFViewer
Desc : This library is also under GPL Licence
Play : https://play.google.com/store/apps/details?id=the.pdfviewer3
Android PDF Viewers
Name : Android PDF Viewer
Link : https://github.com/chintanvyas89/android-pdf-viewer
Desc : This library contains three folders apv library, muPDF, PdfViewer . Pdf Viewer is example
Android PDF Viewer (MuPDF)
Name : Android PDF Viewer
Link : http://www.java2s.com/Open-Source/Android_Free_Code/Pdf/Download_Free_code_Android_Pdf_Viewer_Library.htm
Desc : MuPDF is open source under GPL License
You can also try with below link it also works for me and integrated it in one of my application .
https://code.google.com/r/sylvaincairol-kkkk/source/browse/pdfview/?name=v_0.2.6&r=85a0695dff20bded996822bc9395e69b7af1b2fa