Try code I use to extract text from PDF file:
Dim mPDF as string="C:\test.pdf"
Dim mTXT as string="C:\test.txt"
Dim mPDFreader As New iTextSharp.text.pdf.PdfReader(mPDF)
Dim mPageCount as integer = mPDFreader.NumberOfPages()
Dim fs As FileStream = File.Create(mTXT)
Dim strategy As iTextSharp.text.pdf.parser.SimpleTextExtractionStrategy
For i As Integer = 1 To mPageCount
strategy = parser.ProcessContent(i, New iTextSharp.text.pdf.parser.SimpleTextExtractionStrategy())
Dim info As Byte() = New UTF8Encoding(True).GetBytes(strategy.GetResultantText())
fs.Write(info, 0, info.Length)
Next
fs.Close()
Load the text file and save data to excel file.