Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e809ee033559721…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 10:18:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3b401ea9026a0c8767155f6bf85f40f5 SHA-1: e9d35ecf0547ed588753f2ce1e16c2d9d905953b SHA-256: 8e809ee033559721e5d6c03d38836fbb23de5cd1eb91938587d48f2eb2b60da0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and free items, directing users to a URL associated with malicious redirectors. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URL and the nature of the lure strongly suggest a phishing or malware distribution attempt.

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/how-to-get-free-items-on-roblox-2021-game-hack In PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/unpatchable-robux-hack-website_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/robux-free-robux-robux-robux-robux-robux-robux-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-ghost-simulator-infinite-money-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/gold-chain-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-2021-free-robux-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-any-package-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/saibling-roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-free-robux-with-inspect-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-hack-roblox-with-nopde-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/buy-free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-2-player-superhero-tycoon_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hack-speed-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-hack-rich-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-hack-tool_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/jailbreak-roblox-hack-2021-february_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-how-to-get-free-limiteds_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-ios-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/earn-free-robux-with-points_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_off0000329b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329B 22336 bytes
SHA-256: ca3935c4cf09b86dc8cb7a3107c32cca93ce85d739bb7758f0d10574d29383ad
font_01_sfnt_off00006419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6419 19580 bytes
SHA-256: 7452a0749a76d3be2f1c702febd690ed4fbe437b046072dad6960f1ce49990b0

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