Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e3a1d4b5ef130da…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 06:52:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fab93c8b6811d9134bfed565c1463ba2 SHA-1: d11eef1ae4f4c75f824d91a712883c06b8e68778 SHA-256: 3e3a1d4b5ef130da179ce291aa21db6fa3138112c9428e99439b344eca4e4fbc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and currency generators. The document body and heuristics indicate a lure for free Robux and Coin Master spins, ultimately directing users to a known malicious redirector. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or scam 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-robux-rixty-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-private-roblox-server_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-on-roblox-android-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pubg-uc-to-rm_GM1330123889.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-valentines-generator-just-clicks_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/farming-simulator-hack-roblox-script_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-and-coins-coin-master_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
font_00_sfnt_off00002e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5F 22148 bytes
SHA-256: 32f5d027a49f08db91014a250aa1c85e48a90bbac34003e00dfc223ab4ff3bae
font_01_sfnt_off00005f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 19284 bytes
SHA-256: 6314f4bfd717c55827c4c8a6905e4768cc6c1949ad9ac0f97bad9eb24d6d6592

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