Corrupted pdf files downloaded from Sharefile using Chilkat Delphi

Question

Delphi 10 Seattle IntraWeb 15.0.23 Chilkat 9.5.0.88

Downloading files using the CkHttp_QuickGetBd and writing the response. The downloaded pdf file is corrupted, text files downloaded are fine. Thanks in advance for the help.

fname := PDFPath + filename.pdf;

        rest := CkRest_Create();
        (*Adds the "Authorization: Bearer my_ss_token" header.*)
        CkRest_AddHeader(rest,'Authorization',sftoken2);
        sbUrl := CkStringBuilder_Create();
        CkStringBuilder_Append(sbUrl,PWidechar('https://mycompany.sf-api.com/sf/v3/Items'));
        CkStringBuilder_Append(sbUrl,pwidechar(r));
        CkStringBuilder_Append(sbUrl,PWidechar('/Download'));
        sfresponse3 := CkStringBuilder__getAsString(sbURL);                                                                              
     success := CkHttp_Download(http,sfresponse3,bdResponseBody);
    respStatusCode := CkHttp_getLastStatus(http);
    success := CkBinData_WriteFile(bdResponseBody, pwidechar(fname));