Malicious PDF — malware analysis report

Static analysis result for SHA-256 7822b653a0c8beed…

MALICIOUS

PDF

48.9 KB Created: 2021-05-12 17:45:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 80d46ffd9439f6f6f6cdb559a8f6a8bf SHA-1: 4c0241de319d76e2acb459d102946f5b2a5922d6 SHA-256: 7822b653a0c8beed77277f72dd410efe86a17b21dbff9ec41be5e3be89ffca5d
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 https://netcdn.xyz/app/431946152/roblox-gift-card-for-free-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-no-human-verify_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_003_off00004da8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA8 35192 bytes
SHA-256: c99d72a3cbe88ebaef0241597f6cb48e5b2cc6571caff782692fab942409cf5a
font_01_sfnt_off00009c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C45 18572 bytes
SHA-256: 60e7b0d1b0e81cbc9f742acc768a1a32489c2ca7a8c90f8b1ba1abaa767594e4