Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda6af3ff726d5fc…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 22:22:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc0ef91be8f10cd8d00ae87458d6412b SHA-1: e83428f0730889907b4adeb3557e196a61074535 SHA-256: dda6af3ff726d5fc76a56bd24a907b862b63a0f724aac5e323857f3e04b7614b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious websites, specifically promoting 'game hacks' and 'free currency'. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to known malicious redirectors. The primary attack pattern involves luring users to click these links, likely to download further malware or engage in scams.

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-game-hack In PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-jailbraik-hack_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/2021-hack-gui-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/como-puedo-hackear-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-fashion-frenzy-games-free_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/boku-no-her-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-tiktok-followers-just-username_GM835599320.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/mcmaster-club-coin-master-hack_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_off00003537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3537 22436 bytes
SHA-256: b1ab7df74aa96ab43b23cfebe87527f16e36a91953e3a2d10ea5bf8e816e28f9
font_01_sfnt_off00006718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 18352 bytes
SHA-256: 4bf67e94d7d6dfdea8b6ca4701ccaf1bd5e348753d7f0670dd6fede0c42c998f

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