Error: A PDF file must end with an EOF line.

I had some problems when reading the pdf file from the buffer, since once called the function .sign (), this throws the following error:

/Users/iopazo/Develop/uno/transmision-api/node_modules/node-signpdf/dist/helpers/removeTrailingNewLine.js:40
     throw new _SignPdfError.default (
     ^

Error: A PDF file must end with an EOF line.

Imagine the problem was with one of my PDF files, but checking these if they have the final line.

Here is my integration:

    const signer = require('node-signpdf').default;

    let pdfBuffer = fs.readFileSync(file);

    const signedPdf = signer.sign(pdfBuffer, fs.readFileSync(signature));
    console.log(signedPdf);

comprobante_incorporacion.pdf

From already thank you very much!

[PedroS11]

So how should I solve this problem ? All my pdf’s have that null byte in the end and I can’t trim a buffer.

[ValZapod]

This 0x00 is added by some dumb network app. See this for example: https://doc.lagout.org/science/0_Computer Science/3_Theory/Mathematics/Exploring Abstract Algebra with Mathematica [Hibbard %26 Levasseur 1999-02-19].pdf

the file has 0x00 in the end and yet otherwise bitperfect file from libgen does not have it! WTF. https://libgen.li/edition.php?id=139704336

As for 0D 0A I suppose the standard is vague enough.

Considering that all lines end with \r, \n or both

That is wrong. Last line ends with nothing. If it ends with those, there is now a new line. But here the pdfs created by Acrobat are the reference, both docx printed to pdf and .ps files to pdf by Distiller end in 0D 0A.

**Back in the Adobe 1.3 specification, in Appendix H (Implementation notes), you’ll find this little snippet about the properties of the Acrobat viewer (not the file format):

3.4.4, “File Trailer”

Acrobat viewers require only that the %%EOF marker appear somewhere within the last 1024 bytes of the file.**

Source: https://stackoverflow.com/questions/11896858/does-the-eof-in-a-pdf-have-to-appear-within-the-last-1024-bytes-of-the-file