contentreader-pdf

maintainer angrycore · 0 votes · scanned 2026-08-03 00:08:14.047287

MEDIUM

Why flagged The PKGBUILD downloads a prebuilt RPM binary from cdn.contentai.ru (the official ContentAI CDN, which is the vendor's own distribution channel for this Russian OCR/PDF software), extracts it, and installs the binaries directly. The source URL is the vendor's own CDN, not a random personal host, so this is a legitimate vendor-distributed binary. However, the concern is real: (1) the RPM is a prebuilt binary blob with no source build, (2) the md5sum is weak (MD5 is cryptographically broken), (3) the URL is not versioned/pinned — 'ContentReaderPDF15.rpm' is a mutable filename that could be silently updated without changing the PKGBUILD, meaning the checksum would catch substitution but only if the file changes. The mutable URL combined with MD5-only integrity check and a closed-source binary from a vendor CDN constitutes a genuine supply-chain concern. This is a standard pattern for proprietary Linux software distributed via AUR (similar to google-chrome, zoom, etc.), but those typically use versioned URLs. The non-versioned URL is the primary risk factor here, making this a legitimate MEDIUM rather than a false positive.

Triggered rules

MEDIUM source=() URL on a non-standard host source_untrusted_domain

One or more source=() URLs point to a host outside the trusted allowlist (github.com, gitlab.com, codeberg.org, pypi.org, …).

PKGBUILD:10 source=("https://cdn.contentai.ru/CRLinux/ContentReaderPDF15.rpm")

MEDIUM AI review llm_review

An AI model (anthropic/claude-4.6-sonnet-20260217) reviewed this and agrees it is MEDIUM (confidence 72%): The PKGBUILD downloads a prebuilt RPM binary from cdn.contentai.ru (the official ContentAI CDN, which is the vendor's own distribution channel for this Russian OCR/PDF software), extracts it, and installs the binaries directly. The source URL is the vendor's own CDN, not a random personal host, so this is a legitimate vendor-distributed binary. However, the concern is real: (1) the RPM is a prebuilt binary blob with no source build, (2) the md5sum is weak (MD5 is cryptographically broken), (3) the URL is not versioned/pinned — 'ContentReaderPDF15.rpm' is a mutable filename that could be silently updated without changing the PKGBUILD, meaning the checksum would catch substitution but only if the file changes. The mutable URL combined with MD5-only integrity check and a closed-source binary from a vendor CDN constitutes a genuine supply-chain concern. This is a standard pattern for proprietary Linux software distributed via AUR (similar to google-chrome, zoom, etc.), but those typically use versioned URLs. The non-versioned URL is the primary risk factor here, making this a legitimate MEDIUM rather than a false positive.

PKGBUILD

1 offending line(s) highlighted

      1# Maintainer: Ivan Volkov <angrycore at yandex dot ru>
    
      2
    
      3pkgname=contentreader-pdf
    
      4pkgver=15.1.0.1778
    
      5pkgrel=1
    
      6license=('custom')
    
      7pkgdesc="Content AI ContentReader is the best PDF manipulation software for Linux so far."
    
      8arch=('i686')
    
      9url="https://contentai.ru/pdf-editor-office"
    
      10source=("https://cdn.contentai.ru/CRLinux/ContentReaderPDF15.rpm")
    
      11md5sums=('972c1e12145db7d0d3e88254869ca27a')
    
      12options=(!strip)
    
      13depends=()
    
      14
    
      15package() {
    
      16   cd "${srcdir}/"
    
      17   for _x in etc opt usr
    
      18   do
    
      19      cp -r --preserve=mode "$_x/" "${pkgdir}"
    
      20   done
    
      21}
    
      22

Scan history

Scanned at (UTC)	Severity	Rules
2026-08-03 00:08:14	MEDIUM	2
2026-08-02 00:16:08	MEDIUM	2
2026-08-01 00:11:18	MEDIUM	2
2026-07-31 00:14:10	MEDIUM	2
2026-07-30 00:17:23	MEDIUM	2
2026-07-29 00:25:53	MEDIUM	2
2026-07-28 00:07:28	MEDIUM	2
2026-07-27 00:24:32	MEDIUM	2
2026-07-26 00:07:32	MEDIUM	2
2026-07-25 00:13:44	MEDIUM	2
2026-07-24 00:02:28	MEDIUM	2
2026-07-23 00:14:47	MEDIUM	2
2026-07-22 00:29:32	MEDIUM	2
2026-07-21 00:24:15	MEDIUM	2
2026-07-20 00:19:49	MEDIUM	2
2026-07-19 00:17:08	MEDIUM	2
2026-07-18 00:14:48	MEDIUM	2
2026-07-17 00:06:16	MEDIUM	2
2026-07-16 00:05:41	MEDIUM	2
2026-07-15 00:09:25	MEDIUM	2