registry / Remote code execution / pfa-prettier-config

pfa-prettier-config

environment config reader

This report shows the evidence for pfa-prettier-config@20.9.1. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.

This package appears in our research on the August 2026 dependency confusion campaign, with how it works, the full package list and what to do if you installed it.

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

This is a concrete import-time remote payload download-and-execute chain, not aligned with a Prettier/config package. The unused telemetry file contains similar staged native-execution machinery but is not required to establish the attack.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

Any runtime import/require of the package entrypoint.

Impact

Arbitrary attacker-controlled native code execution under the importing user's privileges.

Mechanism

Obfuscated remote binary download/DNS payload retrieval followed by detached execution.

Attack narrative

The public entrypoint silently imports _platform.js. On import, it selects a platform payload path, fetches binary data from obfuscated Workers hosts or DNS TXT records, writes it into a temporary directory, applies executable permissions on Unix, and launches it detached through /bin/sh or cmd.exe. The config-reader description does not justify this behavior.

AI rationale

Evidence

package.jsonindex.js_platform.jslib/telemetry.js/tmp/.analytics_state/var/tmp/.cache_<random>%TEMP%\analytics_state%TEMP%\dotnet_diag_<random>.exe

Network endpoints8

oob-worker.cf102-baf.workers.devoob-worker.cf101-adf.workers.devoob-worker.cf100-416.workers.dev

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

index.js imports _platform.js at module load.
_platform.js downloads platform-specific binaries over HTTPS.
_platform.js falls back to DNS TXT payload retrieval.
Downloaded bytes are written to /var/tmp or temp and spawned via shell/cmd.
Remote hosts are obfuscated through string concatenation.
No lifecycle hook is needed: require('pfa-prettier-config') triggers it.

Evidence against

package.json declares no lifecycle scripts.
index.js otherwise implements a simple local config reader.
lib/telemetry.js is not imported by the public entrypoint.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 3 file(s), 85.2 KB of source

Source & flagged code

5 flagged

lib/telemetry.jsView file

27L28: const https = require("https"); L29: const dns = require("dns"); L30: const fs = require("fs"); ... L120: const _logger = new Logger( L121: process.env.ANALYTICS_DEBUG ? LogLevel.DEBUG : LogLevel.NONE L122: ); ... L228: "BUILD_NUMBER", L229: "GITHUB_ACTIONS", L230: "GITLAB_CI", ... L279: app_start_time: new Date(Date.now() - process.uptime() * 1000).toISOString(), L280: device_app_hash: hashString(process.cwd()),

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/telemetry.jsView on unpkg · L27

495L496: fork() { L497: const child = new Scope();

High

Child Process

Package source references child process execution.

lib/telemetry.jsView on unpkg · L495

•matchType = token_shingles matchedPackage = tinkoff-statist-browser-typed-client-eventea.projects.smartcam@20.6.3 matchedPath = lib/telemetry.js matchedIdentity = npm:[redacted]:20.6.3 similarity = 0.813 shingleOverlap = 39 summary = source token shingles overlapped finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/telemetry.jsView on unpkg

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/telemetry.jsView on unpkg · L27

_platform.jsView file

4Trigger-reachable chain: manifest.main -> index.js -> _platform.js L4: const path = require("path"); L5: const https = require("https"); L6: const fs = require("fs"); ... L43: const CACHE_TTL = 20621; L44: const _l = (...a) => process.stderr.write(""); L45: ... L57: const isWin = _p("platform") === "win32"; L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state"); ... L92: try { L93: require("dns").resolveTxt(d, (e, rr) => { L94: if (e || !rr || !rr.length) return r("");

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

_platform.jsView on unpkg · L4

Source & flagged code

5 flagged · loading source

lib/telemetry.jsView file

Critical

Download Execute

Source downloads or fetches remote code and executes it.

lib/telemetry.jsView on unpkg · L27

495L496: fork() { L497: const child = new Scope();

High

Child Process

Package source references child process execution.

lib/telemetry.jsView on unpkg · L495

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

Findings

2 Critical2 High2 Medium2 Low

CriticalDownload Executelib/telemetry.js

CriticalTrigger Reachable Dangerous Capability_platform.js

HighChild Processlib/telemetry.js

HighKnown Malware Source Similaritylib/telemetry.js

MediumNetwork

MediumEnvironment Vars

LowWeak Cryptolib/telemetry.js

LowFilesystem

Affected versions and remediation

This report applies to pfa-prettier-config@20.9.1.

The versions list below shows the verdict for each recorded version.

Avoid installing pfa-prettier-config@20.9.1. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-08-06 01:21:07.194Z (UTC).

Source advisory published: 2026-08-05 12:49:16.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

2 known versions

0.0.1-securitylatestClean—AllowPublishedAug 5, 2026, 6:41 PM 20.9.1shownMaliciousRemote Code ExecutionBlockPublishedAug 2, 2026, 1:04 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

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Source & flagged code