Invalid object definition

Classification

Validator	Validator version	Error message type
JHOVE	1.32.1

File format	Version	Specification	Description	Location
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.3		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.3		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.3		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.2		Govdocs1 set	OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			OPF format-corpus
application/pdf	1.4			corpus
application/pdf	1.3			corpus
application/pdf	1.2			corpus
application/pdf	1.7			corpus
application/pdf	1.6			corpus
application/pdf	1.4			corpus

Analyses

Analysis

See JHOVE documentation: https://github.com/openpreserve/jhove/wiki/PDF-hul-Messages#PDF-HUL-37

Is it a bug in the validating software? -

Possible solutions

Output example

Validator returned error.
<?xml version="1.0" encoding="UTF-8"?>
<jhove xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schema.openpreservation.org/ois/xml/ns/jhove" xsi:schemaLocation="http://schema.openpreservation.org/ois/xml/ns/jhove https://schema.openpreservation.org/ois/xml/xsd/jhove/1.9/jhove.xsd" name="Jhove" release="1.32.1" date="2025-02-06">
 <date>2025-11-03T14:32:33+02:00</date>
 <repInfo uri="/corpus/format-corpus/pdf-handbuilt-test-corpus/T02-01_004_document-catalog-incorrect-pages-reference.pdf">
  <reportingModule release="1.12.7" date="2024-08-22">PDF-hul</reportingModule>
  <lastModified>2025-10-22T10:46:06+03:00</lastModified>
  <size>629</size>
  <format>PDF</format>
  <status>Not well-formed</status>
  <sigMatch>
  <module>PDF-hul</module>
  </sigMatch>
  <messages>
   <message offset="0" severity="error" id="PDF-HUL-85" infoLink="https://github.com/openpreserve/jhove/wiki/PDF-hul-Messages#pdf-hul-85">No document catalog dictionary</message>
   <message offset="466" severity="error" id="PDF-HUL-37" infoLink="https://github.com/openpreserve/jhove/wiki/PDF-hul-Messages#pdf-hul-37">Invalid object definition</message>
  </messages>
  <mimeType>application/pdf</mimeType>
 </repInfo>
</jhove>

Notes on the error

Related errors by source files

Ghostscript:    A closing mark (] or >>) had no matching mark, ignoring the closing mark
Ghostscript:    A dictionary is missing a required /Type key.
Ghostscript:    A Form XObject had a BBox with a width or height of 0
Ghostscript:    An embedded font is invalid
Ghostscript:    A page ended after a BT had been executed and without a mtching ET
Ghostscript:    badly escaped name
Ghostscript:    bad trailer dictionary
Ghostscript:    BT found inside a text block
Ghostscript:    Can't repair xref, repair already performed
Ghostscript:    Catalog dictionary not located in file, unable to proceed
Ghostscript:    circular reference to indirect object
Ghostscript:    Couldn't find a named resource
Ghostscript:    Couldn't retrieve MediaBox for page, using current media size
Ghostscript:    degenerate text matrix
Ghostscript:    Document Catalog has incorrect /Type
Ghostscript:    encountered more q than Q
Ghostscript:    encountered more Q than q
Ghostscript:    error executing PDF token
Ghostscript:    error reading a stream
Ghostscript:    ET found outside text block
Ghostscript:    garbage left on stack
Ghostscript:    ignoring zlib error: incorrect data check
Ghostscript:    Incorrect /Length for stream object
Ghostscript:    integer overflowed
Ghostscript:    invalid object number
Ghostscript:    invalid operator used in text block
Ghostscript:    malformed number
Ghostscript:    missing white space after number
Ghostscript:    non standard operator found - ignoring
Ghostscript:    number uses illegal exponent form
Ghostscript:    Object has an unrecognised Subtype
Ghostscript:    object lacks an endobj
Ghostscript:    object lacks a required Subtype
Ghostscript:    Page drawing error occurred.
Ghostscript:    Page has an invalid /MediaBox attribute. Using the current page size.
Ghostscript:    Page has no /MediaBox attribute. Using the current page size.
Ghostscript:    page not found.
Ghostscript:    Page object does not have /Page type
Ghostscript:    page tree root node /Count did not match the actual number of pages in the tree.
Ghostscript:    Possible missing white space between operators
Ghostscript:    recoverable image error
Ghostscript:    stack underflow
Ghostscript:    startxref offset invalid
Ghostscript:    text operator outside text block
Ghostscript:    unbalanced or unescaped character '(' in string
Ghostscript:    /undefined in --runpdf--
Ghostscript:    xref table was repaired
JHOVE:  Invalid object definition
JHOVE:  No document catalog dictionary
veraPDF:        can not locate xref table

Notice: any operation suggested on this page should be carefully considered before use, as this article is in continuous development.