PDF malware analysis — malicious · 425f4065e43d4cc2

MALICIOUS

PDF

46.9 KB Created: 2021-05-13 13:31:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15

MD5: a0af31b8a6ac103c380826970d6382c6 SHA-1: c54699e10da4aac47f8221e6635213b7ebb771eb SHA-256: 425f4065e43d4cc28e0484e8877e8ede58842fb46cc716def4ec967d158baed2

200 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.8948

Heuristics 5

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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
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/free-robux-websites-that-actually-work-game-hack In PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/rewards-roblox-com_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-robux-picture_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/coin-master-tips_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/robux-win_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://gzhi.govvrn.ru/uploads/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004e16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E16	25388 bytes
SHA-256: `2c9b030b651bbf3ab5bdf92e17801167e0372b9fc57b40a8e2d8e9955f040233`
`font_01_sfnt_off000087ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87FF	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off0000920f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x920F	19252 bytes
SHA-256: `f49525d2cb353299e95430044cca9c62699809686ebb763340304ea0e82a2cbb`

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