Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd76dbc79eb8d02e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 22:05:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 407999f593e207c36148ca4824a7125f SHA-1: 1c19408654fbbb155b1d11fa3a8a831a7be5dced SHA-256: cd76dbc79eb8d02e423d86663c257b93cba886feb3cc90aba9b29246a8930a52
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/431946152/can-you-get-robux-for-free-game-hack In PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-robux-quiz-diva_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-roblox-account-with-rpbux-password_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/inside-the-world-of-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-high-school_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-roebucks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/best-free-roblox-exploit-auto-update_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/how-to-get-any-model-for-free-on-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/blacksburg-bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-roblox-accounts-nbc_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verify_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/aimbot-hacks-for-roblox-arsenal_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/gratis-und-sicher-free-robux-gekommen_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_off000032c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C9 22304 bytes
SHA-256: 7a53ab0f9575347cf87c888c5b7ac1c7bc1a0ec8d667d7f84cf1886a1a0f7973
font_01_sfnt_off00006463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6463 18984 bytes
SHA-256: 2c6f447800a96913986af3bd62aa8a594d802346a7a39b4742ef2d084cdb3097

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