Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e07ba0749c61063…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 04:54:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cc07e1c21818f664a23bae0af47e7f82 SHA-1: def8101a3d1cc5980e9a2e66519785dfd2015edd SHA-256: 6e07ba0749c610637096db250e4895d330639281922d8d848d2b7dcd3bb24285
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a 'game hack' and displays a fake CAPTCHA to trick users into interacting with a malicious link. The primary link, https://netcdn.online/app/406889139/coin-master-free-coins-and-spins-2021-game-hack, is likely intended to lead to a further download or exploit. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.online/app/406889139/coin-master-free-coins-and-spins-2021-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id//repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/wurst-115-2_GM479516143.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_004_off00005280.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5280 28588 bytes
SHA-256: b5747f1148859f61272bf3f27c8e1b85b94b8c1132c97c5bacaa260b1e1b212e
font_01_sfnt_off0000910f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 18460 bytes
SHA-256: 9b9248072d2421e664493d6d5ab14406474bc62db1d786ff94b6c1680f0f8261

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