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https://issues.apache.org/jira/browse/PDFBOX-4995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr closed PDFBOX-4995.
-----------------------------------
Resolution: Duplicate
Duplicate of PDFBOX-4997. Thanks for reporting this. You reported it first, but
it got fixed in the other issue, I've added you as a watcher there.
> Multiple PDF signatures with image
> ----------------------------------
>
> Key: PDFBOX-4995
> URL: https://issues.apache.org/jira/browse/PDFBOX-4995
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.20
> Reporter: Daniel Gorelic
> Priority: Critical
> Attachments: signed.pdf
>
>
> A second PDF signature with an image invalidates the first one. If there is
> no image, the first signature remains valid.
> This is what DSS team member wrote:
> Indeed this appears to be a PDFBox bug: One indirect object from the original
> document revision is completely unnecessarily overwritten in each signed
> revision with an object with the identical content. In spite of this not
> actually changing the page content, Adobe Reader apparently considers this
> suspicious enough to claim a document change and signature invalidation.
> The object in question is the object 54 0 which is a color space resource for
> each of the three document pages:
> {code:java}
> 54 0 obj
> /DeviceGray
> endobj {code}
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