Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3560a669137c2a…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 08:12:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: af3c0b7ceafdd7e6bb931d6418f6099e SHA-1: 419fefcc0091061d2131c5a01e37ac09265529d3 SHA-256: 4e3560a669137c2a6081b84d274f9d2922e5ea274adcad5685c4b56d2b2f67b7
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/how-to-get-free-coins-in-coin-master-game-hack In PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-kill-hack-script-fe_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-equip-the-free-item-in-roblox-deathrun_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/hack-for-robux-just-but-ur-username-in_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/play-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/get-free-robux-download_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-tiktok-followers-youtube_GM835599320.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-roblox-collectables_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/como-hackear-coin-master-gratis_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.

FilenameKindSourceSize
stream_002_off00003450.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3450 23228 bytes
SHA-256: 03e219fdc78308aa0103b34dbb3c45573690f6fe44bf40504b5e997c9c516ea4
font_01_sfnt_off0000689e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689E 18164 bytes
SHA-256: 9fab875a536b983537b9433768b1ea3e5c55ad95c87001a66781b974c182b662

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