Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa879ed011806a3c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 22:16:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 206ce795d2fef0f257929a3887d41c0e SHA-1: 0bd0f42db231f089b7e8c4df23713df9ca4d4b7c SHA-256: aa879ed011806a3c5e25483344b86ff340c3574ab648df7e325fc0f61b322fd7
160 Risk Score

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-mod-apk-unlimited-spins-game-hack In PDF document text
    • http://librarysenior.com/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://librarysenior.com/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/online-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/tiktok-free-template_GM835599320.pdfIn PDF document text
    • http://librarysenior.com//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-2021-maps_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/where-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://librarysenior.com/repository/how-to-hack-roblox_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_off00003127.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3127 22884 bytes
SHA-256: 9b6171be20a9adbf0578a57ef9e3c8bafb2bbd7e865a2c0e6ea6324b1e664f1b
font_01_sfnt_off00006497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6497 18876 bytes
SHA-256: c71a24b620bad33a336f203fe19cb26eb375f7b6667ba01091b66d2d0e3ba746