Malicious PDF — malware analysis report

Static analysis result for SHA-256 78264f1599efe78c…

MALICIOUS

PDF

46.3 KB Created: 2021-06-11 06:09:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 61e7f55db3fd4e80b8bb248f0d8b35a2 SHA-1: 80f2f34378e3877e20119fdcd68efe27ab7db877 SHA-256: 78264f1599efe78ca86c1fec0faf95e8c6db3bbc020df3098fcc9f2d6c0c05b7
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/ultimate-driving-roblox-money-hack-2021-game-hack.
  • 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.tw/app/431946152/ultimate-driving-roblox-money-hack-2021-game-hack In PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-no-generator-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/how-do-you-get-roblox-for-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_004_off000052e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E0 25136 bytes
SHA-256: bc242f23fb157e81f074f5603cfbdfff88cb7fd28f8fd4e2db554117152600cc
font_01_sfnt_off00008c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C84 20200 bytes
SHA-256: 93a364043a4ad7dbed36c95a0d492409efc8b649e4f63e9f5868e70487414e0d

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