PDF malware analysis — malicious · 425e31d8a0442e72

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 02:58:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15

MD5: c721cf5f019eafa00687ebfcfdf31336 SHA-1: dc1446cee4713eb77780820efe7aa9f6777e09f5 SHA-256: 425e31d8a0442e7283716ed6929ecd82042dc26236d9b9e25119c1761d31fda8

160 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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 http://netcdn.tw/app/406889139/coin-master-on-facebook-game-hack In PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-roblox-bucks_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/someone-hacked-me-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-free-robux-fbi-open-up_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-telecharging-a-website-of-hacking-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-dragon-ball-infinity-saga-hack_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/pokemon-robux-hack_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/roblox-prison-life-speed-hack_GM431946152.pdfIn PDF document text
- https://www.alamac-kitbag.co.uk/uploads/files/files/how-to-get-for-free-robux_GM431946152.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_off000031a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31A9	22728 bytes
SHA-256: `eb270e377dda78ee6e3363d93e2ffa67f5ec352baa769de804893aa5b810cb01`
`font_01_sfnt_off000064bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64BB	18324 bytes
SHA-256: `bf7aced66542f5c9c621ff9d3ece21a38165d4b254a044be93cf188d4fe44cab`

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