MAL-2026-6546

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ryan-pdf-js/MAL-2026-6546.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6546
Aliases
  • GHSA-7qr7-hcw4-9826
Published
2026-06-27T14:21:07Z
Modified
2026-07-10T17:02:05.658037396Z
Summary
Malicious code in ryan-pdf-js (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (c3d966501b5f533318c26b54887cd29b3cd6c9495035a0f74519ba349357e3eb)

ryan-pdf-js@99.9.1 is an empty stub package (index.js exports {}) whose sole purpose is to deliver an off-registry payload at install time. Its package.json declares its only dependency, ltidisafe, as a direct HTTPS tarball URL on a generic Google Cloud Storage bucket (https://ltidi.storage.googleapis.com/depenconf/ltidisafe-3.1.1.tgz) rather than a registry name, bypassing npm registry scanning. On npm install, npm fetches and unpacks that tarball, and any lifecycle scripts it contains execute on the installer's machine. The bucket path depenconf/ is consistent with dependency-confusion staging, and the package name evokes the widely-used pdf.js ecosystem while shipping no real implementation — a typosquat-shaped lure whose only effect is to route installs through the off-registry dropper.

Source: ghsa-malware (3b26acfcfb972e07369dd35f509acb9463d9fced9d49fc6872abad284bb0a75d)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-06-27T14:36:43.600830137Z",
            "source": "amazon-inspector",
            "modified_time": "2026-06-27T14:21:07Z",
            "sha256": "c3d966501b5f533318c26b54887cd29b3cd6c9495035a0f74519ba349357e3eb",
            "id": "IN-MAL-2026-007677",
            "versions": [
                "99.9.1"
            ],
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ]
        },
        {
            "import_time": "2026-07-10T16:54:13.232086699Z",
            "source": "ghsa-malware",
            "modified_time": "2026-07-10T16:24:51Z",
            "sha256": "3b26acfcfb972e07369dd35f509acb9463d9fced9d49fc6872abad284bb0a75d",
            "id": "GHSA-7qr7-hcw4-9826",
            "ranges": [
                {
                    "type": "SEMVER",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ]
        }
    ]
}
References
Credits

Affected packages

npm / ryan-pdf-js

Package

Name
ryan-pdf-js
View open source insights on deps.dev
Purl
pkg:npm/ryan-pdf-js

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

99.*
99.9.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/ryan-pdf-js/MAL-2026-6546.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "f2c727945460674250f5dff3b64258a5aa011c06a0009ec11eebbb04a1298819",
            "tlsh": "1ae072204a206a330ec601f2882a614bf3718e5f0408bc0c2bdb082c408ea7328fa29c",
            "path": "package.json"
        },
        {
            "sha256": "322ee46d71101bed25f260f2e78a419b5472e28d1ba02831ced05c73b44e5bb8",
            "tlsh": "0e80040d043171c70355404dd140d441d4c04471400550110fc44ddd0004c0c01f0754",
            "path": "index.js"
        }
    ],
    "package_integrity": [
        {
            "filename": "ryan-pdf-js-99.9.1.tgz",
            "hashes": {
                "sha1": "08d81cc0838beba89f4eb2285e9ac932dc6ed88b",
                "sha512_sri": "sha512-0uFMmZv7jxMGXj4vzf1NYMEjZilYrpLC6whYMzEYfsXietGON110GQi9kgsCRd7zXRowxH6DesUFqYVJ+GXbvw=="
            }
        }
    ]
}
cwes 
[
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    },
    {
        "name": "Embedded Malicious Code",
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature."
    }
]