Malicious PDF — malware analysis report

Static analysis result for SHA-256 7937b6a3c823a8db…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 05:22:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 063a9846003c15fa51ff3957d4810e19 SHA-1: 85e0c396c3f320aea1470df29013f4a68fd73ec4 SHA-256: 7937b6a3c823a8db20e2b53d39b982bd4e224b2d8dbbc6a3b739477495baa7e7
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-114-download-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-mobile-hacks-4-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-no-verification-no-credit-card-no-surveys_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-pajamas-free-shipping_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-in-roblox-pc_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-bundles-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-no-survey-or-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-free-items-script_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-games-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
font_00_sfnt_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 22196 bytes
SHA-256: 7590fa60dd33bf6c2a98d5621dbcf09a859f350f70ab409f498cc28fa96fd2ae
font_01_sfnt_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 18744 bytes
SHA-256: e04c8dad389fa8ddb6e9166dcfd52ae6ae64cc707c2c66a8db2dd3b8bc072aff

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