Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd2ad6b73ab07b3…

MALICIOUS

PDF

45.0 KB Created: 2021-06-09 07:40:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 3182a35fae63e2cef5bdda85317e9726 SHA-1: 7638cb6301a80d49f4462756bdc18172c3ec156f SHA-256: 3dd2ad6b73ab07b36250687a238fbad2e299d30dfd58b36832ca169f2058ddae
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.tw/app/431946152/free-robux-on-ipad-no-human-verification-game-hack In PDF document text
    • http://sttlets.education/senayan/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/do-roblox-employees-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/tiktok-download-free-jio-mobile_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/claim-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_off00005001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5001 25480 bytes
SHA-256: 71df376824fcb22896350217c3e098230c4cf8eacf7b5b5d501935f29e6db88d
font_01_sfnt_off00008a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8B 19212 bytes
SHA-256: ae592217c234b791857179e8828fa3fe9caf09a17a40fbf0d23f2120fdffb5a0