Malicious PDF — malware analysis report

Static analysis result for SHA-256 425303b282c085c1…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 02:04:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: c62b8cb4d94cbf2df89d095da8e62980 SHA-1: 380f6509595fcbda4097ded725d881b303a02a93 SHA-256: 425303b282c085c19d1e038ba41a2d650e2460a60f75ebad4c4ad5629170aa16
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/free-robux-glitch-2021-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-mad-city-free-money_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/codigos-paa-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-tool-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-shirt-hair-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-how-to-get-an-invisible-head-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-music-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-superhero-body-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hacks-for-roblox-admin_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-free-robux-script_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-how-to-get-ultimate-trolling-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-game-card_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/the-roblox-free-bloxburg_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-robux-claimer_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_off00002af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF7 22452 bytes
SHA-256: 148f0dda6078e29b1193a21fb8441eee672bde38821f3b67eaa05a9470aa3cbc
font_01_sfnt_off00005cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF3 19580 bytes
SHA-256: 49ba4baf702fc5c58a1f029aa7a71d52698b25bddccb56a1fea57918bb04c541