Malicious PDF — malware analysis report

Static analysis result for SHA-256 f404b41570ca273f…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 19:32:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3e2e484871faf7c18090fff8714570d3 SHA-1: 7cc4d18d6fa756bb9f8b27e5e3ad8bdf965d9d30 SHA-256: f404b41570ca273f237bd5a4a6b7dff3fd11ac1cb9d24a831fe5839b79f85af5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game cheats, specifically for 'Coin Master' and 'Roblox', directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to a game hack redirector. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing or scam attempt designed to lead the user to a compromised site.

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/406889139/coin-master-free-spins-ios-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/free-roblox-commercial_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-50-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cash-for-apps-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-counter-blox-roblox-offensive-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-se_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-champion-shirt_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-a-free-server-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-teleport-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-full-game-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-tix-and-robux-generator_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_off00002f78.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F78 23444 bytes
SHA-256: fbf4d8ab808ca2404b76d8825d8a6208b869ea42a574df32be8ae23f48a6bd88
font_01_sfnt_off0000649a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649A 18176 bytes
SHA-256: bb85a420adb232085a4d21cc0ec3a1e1b4dd2570e44b91fb42254c612c32ab34

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