PDF malware analysis — malicious · f571f723d46960d2

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 04:53:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 7a40d328292e3d6d427f27bdd45a5892 SHA-1: c11777613d10cc42b3dd5ea4e81a259f1863aa00 SHA-256: f571f723d46960d211d1bebb71bf8d13040656cae31795955625376e611f6d4d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacking, specifically for Roblox, to entice users to click on a link. The primary link, http://netcdn.tw/app/431946152/how-to-hack-roblox-for-robux-game-hack, is identified as a high-risk indicator. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt designed to lead users to potentially malicious content or further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-hack-roblox-for-robux-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/prison-breaker-roblox-hacks_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-rabbit-simulaator-2-on-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-download-roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/claim-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/www-free-robux-generator_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-cheat-on-roblox-tycoons_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-btools-hack-2021-june_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-exploit-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-pocket-edition-free-download_GM479516143.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_off000030a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30A4	22732 bytes
SHA-256: `6df359b45b98956bdc128861cd5a5bc6d0dd88eae893ddfeb02ee629b040977e`
`font_01_sfnt_off00006373.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6373	19124 bytes
SHA-256: `9f0d208e26822d6a242fed99df9fbfacecc5a4ec77afd90406185fcaa2ab8822`

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