PDF malware analysis — malicious · 30f71d98d1128222

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 15:47:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 38ab09fd91c98b66f84a9d06856f1c47 SHA-1: 7e6d9795520a264b39acc1c41f6395349ba544e1 SHA-256: 30f71d98d11282224403695f72fc2efca5971a0fbd436a92d9cef0aae59c8d17

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a malicious URL. This URL, 'https://netcdn.online/app/431946152/free-robux-script-game-hack', is likely intended to host a payload or phishing content. The presence of embedded URLs and the 'free generator / game hack' lure strongly suggest a social engineering tactic to trick users into downloading or visiting a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

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.
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.online/app/431946152/free-robux-script-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-today_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/getrobux-come_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-scams_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/claim-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.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_off00005283.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5283	25100 bytes
SHA-256: `e721c665191c7f33d49909503cbf4322db0a5152f9493b54aded6d5a9ee59b94`
`font_01_sfnt_off00008c16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C16	18416 bytes
SHA-256: `7904477eb6282cb79bb1f8d95588be1a5283b3abf5667e30a4d761915d4b26ef`

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