Malicious PDF — malware analysis report

Static analysis result for SHA-256 47837f1ca86ba5c2…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 13:19:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: e298b5008dd4002f41c4db71e871a5db SHA-1: bad2ec5610a33f5d3ebc6d228b854dbcedcdc665 SHA-256: 47837f1ca86ba5c2e0b05273a9c6c453e40b5325df257fda0c51b613238d1ec9
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-hack-2021-apk-download-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/swiftbucks-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-do-you-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-hack-windows-7_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/where-to-get-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-pe_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-who-hacked-jay-tophat_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-auto-aim-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/comment-hacker-vehicule-simulator-sur-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-hack-scrip_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-broken-bones-4-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-royale-high-outfit-hacks_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-with-no-serveys_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-aesthetic-outfits-free_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.

FilenameKindSourceSize
stream_002_off00002f6c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F6C 22800 bytes
SHA-256: e0ff91366de2b7c19d8ddf350c13a1d1a32b4b62e93dd19db59c88c850038efb
font_01_sfnt_off0000626d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 19160 bytes
SHA-256: e96f67c5fb0e19195a3a24d048c21cc2a0a057bb019608dbea67b6a84c16e978

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