Malicious PDF — malware analysis report

Static analysis result for SHA-256 44580f4a303a2dd6…

MALICIOUS

PDF

46.6 KB Created: 2021-05-16 15:45:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 687ea0a04a7819b885141051cf7ff176 SHA-1: dea452b707467afdff1422e6d6936e4009426970 SHA-256: 44580f4a303a2dd64f7354f1561b32c510631d33aaddb0bcbf8e23c0d62390d0
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/free-spins-coin-master-links-blogger-game-hack In PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3mojokerto.sch.id/__statics/gudangsoal/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D08 25264 bytes
SHA-256: 597c5d9340ccb4aa6bf60f1b4c59aa4bace4958d4e510e5e3ee983d6865f5429
font_01_sfnt_off000087dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off000092bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BB 18632 bytes
SHA-256: e19cb03e4db5dc0ff2825ab1b6cd29120edbbac4e5fd870bab1836bcb421f615

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