Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa874c475a0ee434…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 11:17:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 6d7a2adbea62a9a11b5c05a71bba6ab0 SHA-1: 780afa92a38bf5fe087c871279083ef74f71afac SHA-256: aa874c475a0ee434cf7e49c7cd571d269accc38c07f3d6e8d4165495d8e60702
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/479516143/minecraft-apk-free-download-game-hack In PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-ban-someone-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/robux-download_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-have-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/minecraft-cheat-client_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.

FilenameKindSourceSize
font_00_sfnt_off000032fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32FE 22852 bytes
SHA-256: 1088618024ecc4c8d31b7b29c583dd0cc32bc450910d703b202baa1a481f3f57
font_01_sfnt_off00006653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6653 18924 bytes
SHA-256: 1de344d99f1e631699adb44c0f23fb2d6ffa0cf287341dc691753e7d540fe775

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