Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27db6192f5c1bd7…

MALICIOUS

PDF

43.0 KB Created: 2021-06-04 04:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 94ce77238147becd814b5a40d595538b SHA-1: 1d316f2e80c775a34cef51151ab135054d184513 SHA-256: e27db6192f5c1bd739ece64fa05fd3b5ca5962fd71a37179f098e482e659b360
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure, specifically for Coin Master. The document body and embedded URLs reinforce this, pointing to sites offering free spins or game hacks. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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 https://netcdn.online/app/406889139/coin-master-free-spins-link-2021-app-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/www-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-tiktok-followers-youtube_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/what-is-wurst_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_off00004e26.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E26 24096 bytes
SHA-256: b3b94cda093b9717b6b465b635db394e6c0ab411e84fe5ea6b86dfea1a55b3ef
font_01_sfnt_off000084a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A9 18456 bytes
SHA-256: 167b39d3647e498e0ec03b327af8990ef16421e892c116ed7416f41c48696d06

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