Malicious PDF — malware analysis report

Static analysis result for SHA-256 7824eefd2d503c4e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 11:55:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 3da604748281f9a3b430022a6768c668 SHA-1: d56c4f46797568a3467fb03334d0c0872e39fed6 SHA-256: 7824eefd2d503c4e3c39a877e6a3ff53fe0fefe598787ab6552bb6faeb13b6eb
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-card-hack-app-game-hack In PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/when-does-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/pastebin-roblox-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-aout-2021_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/is-getting-free-robux-illegal_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/hacks-for-roblox-the-purge_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-avtar-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/robux-hack-easy-2021_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/cheat-on-roblox-ghost-simulattor_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-superhero-body-in-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-cute-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-loadstring-hack_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-free-spins-and-coins-app-download_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_off000030fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30FC 23200 bytes
SHA-256: cac5acadfc57bbeab5fae571061d11c5a746bb77f9e351775298561841f4567d
font_01_sfnt_off00006536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6536 18352 bytes
SHA-256: 7a6741876b8a4f47fa99d807c74985d7cbc04f51e0567589917582e4a0dfbcea

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