w-docx2pdf@1.0.21
A tool for docx2pdf.
AI Security Review
scanned 1mo ago · by lpm-firewall-aiThis is a real remote-code execution supply-chain risk, but the visible source and conversion flow are consistent with the stated DOCX-to-PDF function and do not establish malicious intent. The remote binary is unreviewable and mutable, so the package should be warned rather than marked clean.
Static reason
No blocking static signals were detected.; previous stored version diff introduced dangerous source
Trigger
npm installation runs postinstall; calling the MicrosoftOffice conversion mode runs the file.
Impact
A mutable remote executable can run with the installing or calling user's Windows permissions.
Mechanism
Remote executable download followed by local process execution.
AI rationale
This is a real remote-code execution supply-chain risk, but the visible source and conversion flow are consistent with the stated DOCX-to-PDF function and do not establish malicious intent. The remote binary is unreviewable and mutable, so the package should be warned rather than marked clean.
Evidence
package.jsonscripts/install.mjssrc/downloadFiles.mjssrc/WDocx2pdf.mjssrc/cv.exe_convertTempPdf
Network endpoints1
github.com/yuda-lyu/w-docx2pdf/raw/refs/heads/master/src/cv.exe
Decision evidence
public snapshotAI called this Suspicious at 96.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- The install hook automatically downloads a Windows executable from a mutable GitHub branch.
- The downloaded executable is later launched to process documents on Windows.
- The package does not ship or verify the executable, so its installed code can differ from the reviewed source.
Evidence against
- The visible Python source implements DOCX-to-PDF conversion and matches the package purpose.
- The downloader writes only the package's src/cv.exe path; no credential harvesting or broad project mutation was found.
- The bundled DOCX and PDF files are ordinary test fixtures.
Behavioral surface
ChildProcessCryptoFilesystemNetwork
HighEntropyStringsMinifiedPossibleObfuscationUrlStrings
Source & flagged code
8 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node scripts/install.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgsrcPython/test.batView file
•path = srcPython/test.bat
kind = build_helper
sizeBytes = 23
magicHex = [redacted]
Medium
Ships Build Helper
Package ships non-JavaScript build or shell helper files.
srcPython/test.batView on unpkgtest/ztmp.docxView file
•path = test/ztmp.docx
kind = compressed_blob
sizeBytes = 514867
magicHex = [redacted]
Medium
Ships Compressed Blob
Package ships compressed or archive-like blobs.
Findings
5 High4 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighShips High Entropy Blobtest/ztmpTrue.pdf
HighPayload In Excluded Dirtest/ztmpTrue.pdf
HighSemantic Analysis Limiteddist/w-docx2pdf.umd.js#virtual:normalized:round1
HighPrevious Version Dangerous Deltadist/w-docx2pdf.umd.js
MediumNetwork
MediumShips Build HelpersrcPython/test.bat
MediumShips Compressed Blobtest/ztmp.docx
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNested Archive Needs Inspectiontest/ztmp.docx
Affected versions and remediation
This report applies to w-docx2pdf@1.0.21.
See all versions of w-docx2pdf for other recorded verdicts.
- Review the evidence and your use of w-docx2pdf@1.0.21 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.