Attach (recommended) or Link to PDF file here:  [test.pdf](https://akmer.aikucun.com/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3_1616477914120_83.pdf)


Configuration:
- Web browser and its version: chrome 87.0.4280.88
- Operating system and its version: windows10
- PDF.js version: 2.6.347
- Is a browser extension:

Steps to reproduce the problem:
1. just open 

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/17724610/112087066-473f8f80-8bc8-11eb-8efb-56139ec42a9c.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

var rawBytes = this.str.getBytes(rowBytes);
    this.eof = !rawBytes.length;
    if (this.eof) {
      return;
    }
    var bufferLength = this.bufferLength;
    var buffer = this.ensureBuffer(bufferLength + rowBytes);
    var prevRow = buffer.subarray(bufferLength - rowBytes, bufferLength);
    if (prevRow.length === 0) {
      prevRow = new Uint8Array(rowBytes);
    }
    var i,
      j = bufferLength,
      up,
      c;
    switch (predictor) {
      case 0:
        for (i = 0; i < rowBytes; ++i) {
          buffer[j++] = rawBytes[i];
        }
        break;
      case 1:
        for (i = 0; i < pixBytes; ++i) {
          buffer[j++] = rawBytes[i];
        }
        for (; i < rowBytes; ++i) {
          buffer[j] = (buffer[j - pixBytes] + rawBytes[i]) & 0xff;
          j++;
        }
        break;