Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f9eef52f7abba7…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 13:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4fe2317600770ee4a61a664a89384955 SHA-1: fb63d80e9edb360d4056199e05e781fc6d32e546 SHA-256: c6f9eef52f7abba714f13b9465a75c50692d7f30262ab8e26feaaf3df65494f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free spins, directing users to a known malicious redirector. The embedded URLs and document body content strongly suggest a phishing or scam attempt designed to lead users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent.

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-free-spins-and-coins-today-gift-reward-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-bear-mask-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-inspect-console_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coins-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-roblox-games-on-pc_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-do-you-hack-admin-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-pass-or-survey_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-outfits-on-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_off00003278.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3278 22820 bytes
SHA-256: 7b2a205249a86ca7760277500dee51c3a67ceeac8a30230bb7c61a7f6428ad84
font_01_sfnt_off00006590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6590 18692 bytes
SHA-256: d31088ae19f241ea86c3227f133fc8e6698cecaa627da06b5b2cde690df300ac

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