Malicious PDF — malware analysis report

Static analysis result for SHA-256 4452758b5a5a23ec…

MALICIOUS

PDF

36.3 KB Created: 2021-06-27 13:23:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 31d2e9edc4d25d23a8d56d45d7013a41 SHA-1: fcbd436a2ea4d93b38838d710f21bacb4da3f8e9 SHA-256: 4452758b5a5a23ec83fd14be0ef085bf8de4932a7cd3ed3ac375d7c6f342cbad
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.co/app/431946152/cuentas-gratis-de-roblox-hack-game-hack In PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-other-people-roblox-accoubt_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-kids-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cheat-in-parkour-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-visit-bot-free-trial_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/a-website-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-dragon-ball-z-revalations-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-pour-recuperer-son-conte-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-robux-2021-easy_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_off00003392.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3392 23372 bytes
SHA-256: 0ee1f6ced75ae03bc79b66a36eaffa76f4442e939a2fa67baa6d0dd415850cd0
font_01_sfnt_off00006860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6860 19188 bytes
SHA-256: b4e42fc0e118a2678fac77cabb5ee20682470dfa23c999a7adf2d9de20133596