Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa83b2aef3b7a3b8…

MALICIOUS

PDF

35.8 KB Created: 2021-06-20 06:04:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: d78318783fd2b4d4cbd6399220829f72 SHA-1: a4f1dbcfe42bd187a77b557bd4931051517dcbe2 SHA-256: aa83b2aef3b7a3b89e1f610b48e359aee316007831860010219781664212c206
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/roblox-account-generator-free-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-over-1-million_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-2021-october_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-redeem-card-codes-2021-august_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/telecharger-hack-pour-roblox-mad-city_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/elysian-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-clothing-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/catalog-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-cheat-engine-2021-download_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-cheat-engine-youtube_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/are-there-any-roblox-hacks-that-actually-work_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-page_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/rbxboost-get-free-robux-online_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/bloxland-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hacks-2021-working-no-scam_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_off00003418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3418 23024 bytes
SHA-256: 3d0218629ddbd523a40d65cd8e2a6f4b5a1e1158a080a2e66ed122e892fb0b7c
font_01_sfnt_off0000679f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679F 18896 bytes
SHA-256: 81e305502416d72bc7dafcaac479573a922e0f7fdad035da696c552b72e674ea

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