Malicious PDF — malware analysis report

Static analysis result for SHA-256 77ed6c09dd59a45b…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 14:05:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: acf462ee90d3b8a166449e96ed2f2726 SHA-1: 93dd32571f6368c4bc2a76cd0e0828d55b662201 SHA-256: 77ed6c09dd59a45b1d3909f4437eb22d930cf2c4a8872b6420746ed645c1711d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/835599320/when-tiktok-free-download-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hacks-for-legends-of-speed-roblox-download_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/tiktok-free-view-30_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/cheats-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-crown-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-trade-bot_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/utiliser-cheat-engine-sur-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-et-free-robux-on-roblox-and-bc_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_off00002e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E39 21840 bytes
SHA-256: 4cb2d88e2eaab00aa8d55be6cb06c4f4d3519e12211313797225edb877e486b8
font_01_sfnt_off00005e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 18916 bytes
SHA-256: 2162a7786632d71f2bb6d3051fbd845d067ad9e619da3ce3084eb02619b67ed4

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