Malicious PDF — malware analysis report

Static analysis result for SHA-256 f606b6cdd07632f7…

MALICIOUS

PDF

48.0 KB Created: 2021-06-03 05:13:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 198f280c0d74d41ede90b77d8a16822e SHA-1: 17825f4512ba54eb3e466bd64d069c80449426b8 SHA-256: f606b6cdd07632f75d52d8a7bf50b57f91b203541c0e3a92e7b117bdec022824
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and generators. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/479516143/minecraft-hacks-wurst-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/why-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/howe-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pubg-uc-qiwi_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000535e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x535E 27148 bytes
SHA-256: 3fc96dcbc53a7f871701957b67b6f362ca769bc6056402f0f094af692de48ad1
font_01_sfnt_off00008f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9E 2892 bytes
SHA-256: e0a0e7499c3dd10c5114bd1538d6e258e6cb3acdd4f79d9538668087a4bdd2cc
font_02_sfnt_off00009987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9987 18076 bytes
SHA-256: 3e7497e6bc4bf84e5186ee2c608eda5b15e7e8e7c6854cdd6eb66a0ec10d8832

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