PDF malware analysis — malicious · 849d4f0198c7a8a0

MALICIOUS

PDF

47.0 KB Created: 2021-05-12 11:48:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 0b7bac15774b8222b881cf035d799c85 SHA-1: 6aae2f31b6202af2c2c93a5d3851f649ab9e809c SHA-256: 849d4f0198c7a8a0a63be68c663b983ede2149850e54f0359bae2335573642a2

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and links to known malicious redirector infrastructure, specifically promoting a 'coin master hack'. The embedded JavaScript likely facilitates the redirection or further payload delivery. The document body and heuristics indicate a lure for game-related cheats or generators, a common tactic for phishing or malware distribution.

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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/406889139/coin-master-hack-without-verification-2021-game-hack In PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/minecraft-ios-mods_GM479516143.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
- http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/minecraft-pe-hack-client-ios_GM479516143.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
`stream_003_off00004cc7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CC7	26996 bytes
SHA-256: `4b9e963ec147afb26d5ab13218b58f417e180cccd28e227d7bea425b38b50223`
`font_01_sfnt_off00008a57.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A57	2812 bytes
SHA-256: `fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f`
`font_02_sfnt_off000093f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93F8	18756 bytes
SHA-256: `1f8069b8e373c1677ee696ae61803aee5e0941708a1ef93a03d88c08535d6ef3`

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