Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6219061395c3ba…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 07:08:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: e64f0c42ca86aab2ead8b7f7e11a271a SHA-1: 44b52e6c6c41e3a3ae1e9b3aa9efd248176acbac SHA-256: 2b6219061395c3baff66f0a7ac708d0d06d61213e8114f6bf724ec257d92fcbe
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-hack-apk-35-18-game-hack In PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/dowload-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-copy-and-paste-2021_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/roblox-costumes-free_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-roblox-bypass-audio-maker_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-25-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/roblox-hack-robux-with-executor_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-roblox-game-robux_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-chromebook_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_002_off000033a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A3 23172 bytes
SHA-256: 4c26d67dbb730ac8588eaaa1982470f982d9e28fc05388cc2cd3eb9fe56b3ff3
font_01_sfnt_off0000680b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680B 18804 bytes
SHA-256: aac05d6177a90b60b5ec55135024cf4c2d0f170c36ca73a7d8cfbc5a1b3be2be

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