MAL-2026-13045

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-fixture-paperclip/MAL-2026-13045.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13045
Published
2026-08-05T14:31:24Z
Modified
2026-08-05T15:51:56.294912924Z
Summary
Malicious code in boxy-fixture-paperclip (npm)
Details

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

Source: amazon-inspector (78a47f722fb30af7936e07182fa5fb42ecfd7efbacadd970a148a8a7daefc8e2)

On any require/import, index.js loads _adapter.js, which selects a platform-specific asset and downloads an opaque binary from a rotating set of Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev). The hostnames are reassembled at runtime via array-join to defeat static string extraction. The downloaded bytes are written to a hidden dot-file under /var/tmp (POSIX) or %TEMP% (Windows), chmod 0755'd, and executed detached via spawn('/bin/sh', ['-c',...]) or spawn('cmd',...). A DNS-TXT covert channel under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru provides a fallback that chunk-reassembles a base64 payload from TXT records when the primary hosts are unreachable. The tarball also ships lib/telemetry.js, an ~81 KB parallel dropper module masquerading as a Sentry-like analytics SDK that is not referenced in this version but duplicates the _adapter.js payload-staging shape. Installing or importing this package results in execution of attacker-controlled code on the installer's machine.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-08-05T14:31:24Z",
            "id": "IN-MAL-2026-015334",
            "import_time": "2026-08-05T15:19:45.452962161Z",
            "versions": [
                "35.8.2"
            ],
            "source": "amazon-inspector",
            "sha256": "78a47f722fb30af7936e07182fa5fb42ecfd7efbacadd970a148a8a7daefc8e2"
        }
    ]
}
References
Credits

Affected packages

npm / boxy-fixture-paperclip

Package

Name
boxy-fixture-paperclip
View open source insights on deps.dev
Purl
pkg:npm/boxy-fixture-paperclip

Affected ranges

Affected versions

35.*
35.8.2

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature."
    }
]
indicators 
{
    "package_integrity": [
        {
            "filename": "boxy-fixture-paperclip-35.8.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-DX8dXHHoIP4cRpQaAvbKau11bW0dHihVy3JEualX8fB66KgN+9PoxeMkyTbHdiFm3yeytevsYarGt2c3vtYySw==",
                "sha1": "3a98c96dba78c605c3dee39df89be0ee78e05cc1"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "_adapter.js",
            "tlsh": "f4b1b69a15a770188bb0dbe0c3175416f25ae2633381c198f75c99d81fb756883b2efc",
            "sha256": "35e70e3ef64ea37773f0fc54c3e5ae14fba74b99c7501a44609ed5318f639878"
        },
        {
            "path": "lib/telemetry.js",
            "tlsh": "93835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "6de13e23867a95f37b5e1f63b7177edfeeae4318f08d23ce94543d3005e06220"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-fixture-paperclip/MAL-2026-13045.json"