import io
from PyPDF2 import PdfReader

def extract_text_from_pdf(pdf_bytes: bytes) -> str:
    try:
        reader = PdfReader(io.BytesIO(pdf_bytes))
        text = ""

        for page in reader.pages:
            page_text = page.extract_text()
            if page_text:
                text += page_text + "\n"

        return text
    except:
        return ""