w-docx2pdf@1.0.20
A tool for docx2pdf.
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe package's postinstall hook remotely fetches a native executable and runtime code executes it without integrity validation. The behavior may support its stated conversion feature, but the remote executable supply chain is unsafe and unresolved.
Static reason
No blocking static signals were detected.; previous stored version diff introduced dangerous source
Trigger
Installing the package runs the downloader; invoking the Microsoft Office conversion mode runs the downloaded file.
Impact
A change to the remote executable can cause code to run on a Windows consumer system.
Mechanism
Remote native payload download followed by local execution.
AI rationale
The package's postinstall hook remotely fetches a native executable and runtime code executes it without integrity validation. The behavior may support its stated conversion feature, but the remote executable supply chain is unsafe and unresolved.
Evidence
package.jsonscripts/install.mjssrc/downloadFiles.mjssrc/autoDownloadFiles.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 98.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- The package runs an automatic postinstall script.
- The postinstall path downloads a Windows executable from a mutable GitHub branch into the package.
- The downloaded executable is later selected and executed for document conversion without an integrity check.
- The runtime fallback repeats the download if the executable is absent.
Evidence against
- The executable download and invocation are structurally related to the advertised Windows document-conversion feature.
- No source code inspected harvests credentials or uploads local data.
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@1.0.20.
See all versions of w-docx2pdf for other recorded verdicts.
- Review the evidence and your use of w-docx2pdf@1.0.20 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.