Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e3be09c2af530d…

MALICIOUS

PDF

45.5 KB Created: 2021-06-10 13:52:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2d59f2961a378cc71c35ad1968b6a493 SHA-1: b512ffa48d06d3fe9c538fe987d96d4e69a4820c SHA-256: c8e3be09c2af530d8c1b0e9ecf407a4fa277239378ed6cb046a8fd842cae8f84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-website-roblox-stuff-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/free-website-roblox-stuff-game-hack In PDF document text
    • http://www.eaapiaria.es/images/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-get-free-adidas-shirt-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/no-robux_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-followers-on-tiktok-app_GM835599320.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-form-farms_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-coins-2021-coin-master-link_GM406889139.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_004_off000050db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50DB 27912 bytes
SHA-256: 04327578478216cd32bc83172824908257c09b1f3c8fd8449ea87805e3f598f8
font_01_sfnt_off00008ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC1 18508 bytes
SHA-256: 8f0ae11a5456095873a9fee8440473ce2ab742882f34204f4251f0951b1c1a21

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