PDF malware analysis — malicious · 0e780a3cc07f40c2

MALICIOUS

PDF

40.4 KB Created: 2021-04-30 01:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 95729e2a0f30cd2f1173f9323cd438d6 SHA-1: 536bc9feb5b25a44ffe3c200e20b983c65f000a1 SHA-256: 0e780a3cc07f40c2a9e71d50bf955f83da5326deb72a3ec6db10e9d7609441d2

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically for Roblox. The document body also contains the URL 'https://netcdn.xyz/app/431946152/roblox-com-free-skin-game-hack' and a call to action to access a Roblox generator. This suggests the document is designed to trick users into clicking malicious links, likely leading to malware downloads or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

Heuristics 5

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.xyz/app/431946152/roblox-com-free-skin-game-hack PDF link annotation
- https://www.malesse.com/ckfinder/userfiles/files/how-to-get-gamepasses-for-free-on-roblox-2021.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/claim-gg-earn-free-robux-for-roblox.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/how-to-get-free-robux-without-a-human-verification.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/how-to-get-free-robux-ipad-only-2021.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/roblox-how-to-get-free-hats.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-password.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/free-robux-time-glitch.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/descargar-roblox-hackeado-para-pc.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/robux-hacks-admin-commands.pdfIn PDF document text
- https://www.malesse.com/ckfinder/userfiles/files/robux-hack-no-human-verification-2021.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000041c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x41C6	25768 bytes
SHA-256: `683f77f9ca47996198529eb8a036e59d63f5e70d603eac59099796d80b3328a9`
`font_01_sfnt_off00007bb5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BB5	18500 bytes
SHA-256: `226d1c85710f2636bb4ea1c816815dbed731ccb773bfeedc5b195169d359de7e`

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