Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2066dd4a8061bd7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 19:28:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c9246e38d871110d2bd805a16ec8b64 SHA-1: 1227d94320dc5aea0e6a4ad4686092e3838c4b30 SHA-256: a2066dd4a8061bd7d84cede01ca1c7b5357a6e4dc51bd4eaa403f74a0914c86e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and scam pages, specifically targeting users interested in game hacks and free currency. The heuristic firings confirm the presence of malicious redirector infrastructure and a lure for free generators. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam campaign designed to lead users to potentially malicious websites.

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.tw/app/406889139/coin-master-hack-android-root-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-codes-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/gamekit-800-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-on-roblox-without-buying-anything_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/script-hack-2021-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-coloring-pages-free_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-roblox-for-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-car-glitch-in-roblox-vehicle-sim_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
stream_002_off000031a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31A6 22532 bytes
SHA-256: dc242ac484bfb76c1717c540d1691747c03eb5e91829b064c6219f5263d78255
font_01_sfnt_off000063cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CF 18180 bytes
SHA-256: 51faa3559cb72afef26eab25742807bc94eaba9b8482ef22c8ad282f4dbc856c

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