[PDFBOX-3923] Expected a long type at offset 52152, instead got 'xref'

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0, 2.0.7
• Fix Version/s: 2.0.8, 3.0.0 PDFBox
• Component/s: Parsing
• Environment: Java 1.8.0_144-b01
• Assignee: Tilman Hausherr
• Reporter: Tres Finocchiaro
• Created: 06/Sep/17 13:32
• Updated: 02/Nov/17 21:01
• Resolved: 30/Sep/17 13:08

Description

This reads as a duplicate of PDFBOX-2441, PDFBOX-3179 and several others marked as resolved in 2.0.0 however this bug is reproducible in PDFBOX 2.0.0 as well as PDFBOX 2.0.7.

The attached PDF file is parsable by Chrome (PDFium), Mozilla (pdf.js), Edge, Windows 10 Reader and Adobe Acrobat but fails using PDFBOX 2.0.0 and PDFBOX 2.0.7 with the following error.

Exception in thread "main" java.io.IOException: Error: Expected a long type at offset 52152, instead got 'xref'
        at org.apache.pdfbox.pdfparser.BaseParser.readLong(BaseParser.java:1358)
        at org.apache.pdfbox.pdfparser.BaseParser.readObjectNumber(BaseParser.java:1286)
        at org.apache.pdfbox.pdfparser.COSParser.parseFileObject(COSParser.java:760)
        at org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:742)
        at org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:673)
        at org.apache.pdfbox.pdfparser.COSParser.parseDictObjects(COSParser.java:633)
        at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:241)
        at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:276)
        at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1011)
        at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:949)
        at org.apache.pdfbox.tools.PrintPDF.main(PrintPDF.java:140)
        at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:72)
Caused by: java.lang.NumberFormatException: For input string: "xref"
        at java.lang.NumberFormatException.forInputString(Unknown Source)
        at java.lang.Long.parseLong(Unknown Source)
        at java.lang.Long.parseLong(Unknown Source)
        at org.apache.pdfbox.pdfparser.BaseParser.readLong(BaseParser.java:1353)
        ... 11 more

We do not generate this PDF file so we are unaware of the origin but the creator has given permission to share this file publicly for troubleshooting purposes. We can ask any questions to the creator upon request.

Issue Links

• relates to: PDFBOX-3935 DataFormatException: invalid stored block lengths