Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8019a9f3b5cfcc…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 02:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 7afd4917b6d183d2253928aaf6700cb3 SHA-1: 4f26976f954bb490a69251776584100fdc5eb9b2 SHA-256: 5d8019a9f3b5cfcccb6e8ce2092143f77cf4c98b96a87631f76aea8f9fab8020
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/www-free-robux-game-hack In PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/roblox-gear-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/roblox-studio-free-download-pc_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-list-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/free-robux-2021-august_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/2021-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/descargar-hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2jember.sch.id/__statics/gudangsoal/files/win-free-robux_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_off00003271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3271 22188 bytes
SHA-256: 1452ed69db4fd4da5d281b0ee4fa770d8b6388e78b5bbc8726f7ccef533883f5
font_01_sfnt_off0000639f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 19080 bytes
SHA-256: acf5ca21e1b57f7804790e88d3c8e797014eccbd964a564fa6b8ab1e1ef3ee82

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