Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edf60fffeeb13b9…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 06:57:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 80d8d3c6d7985fba59b92dbd584d9f6d SHA-1: cd2fdac652c3ba1ee76509ba2654c9d811603af1 SHA-256: 1edf60fffeeb13b9fb7e878a38535c29d67ffefb30715d04d1d097c6cb1feaf6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of free game hacks and in-game currency to entice users. It contains numerous embedded URLs, with the primary one being http://netcdn.tw/app/479516143/minecraft-free-ios-no-verification-game-hack, which likely leads to a malicious download or scam page. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and redirection behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/minecraft-free-ios-no-verification-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-a-free-vip-server-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/all-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/do-you-want-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/run-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/why-am-i-a-cheater-in-roblox-parkour_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-for-unlimited-money_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
font_00_sfnt_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 21928 bytes
SHA-256: a4f9a5af3f717bcbd3eb70e58b1ff45648e32f46d662ef1c27d920c2fdfcbb6c
font_01_sfnt_off0000612e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 18132 bytes
SHA-256: 9921e29242a30a87c239e4842ad7b287d420a62858cff22e2e8107af17a37070

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