Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fa1d13a3e9aecb…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 16:37:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: d3da4d63b8d95e5ed6152ab8cdfae551 SHA-1: 5d83d3d56bf2a9a8a96bfa5b2e3adb5a07b3582a SHA-256: f2fa1d13a3e9aecb9645127ef65f4a6dfa60aa700de98dbf61bec05455c77c34
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/479516143/is-minecraft-bedrock-edition-free-game-hack In PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/websites-where-you-can-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-run-faster-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-t-shirt-on-roblox_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-with-windows-7_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/money-cheats-roblox-cmd_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/roblox-hack-apk-download_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/ideos-de-thanos-en-roblox-como-perfil-free_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/equillex-free-robux_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/robux-apk_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-create-group-in-coin-master-free-spins_GM406889139.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_off00003447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3447 21724 bytes
SHA-256: 5fc2bda7c0880f684aa475f1a7497ee34bead17407ef1aabbe0e9ed024323c2c
font_01_sfnt_off00006403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6403 18560 bytes
SHA-256: 8c2aade69ad879b6b8c52caec59c1b00876ea4d1a7a1da7d8dbd37bdf8bae558

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