Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfecde22aa2cf22e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 02:11:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8ac6a44a01cf50f489b3a9085dadcee0 SHA-1: d4565b25a6442471d96b7e7ef2fba06c2ac22dd5 SHA-256: dfecde22aa2cf22e2f33c3dbdf2a01e0366291041c4ad8c61a82d2a9bb3e4c3c
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/406889139/coin-master-free-spin-and-coin-link-today-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-cute-royale-high-outfits-roblox-twitter_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-coins-in-roblox-bandit-siimuator_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-galaxy-hoodie-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-emotes-list_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/where-tiktok-free-views-apk-download_GM835599320.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/pagina-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-youtube-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-roblox-robux-with-cheat-engine_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_off00003071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3071 22988 bytes
SHA-256: 74d97c4f6b80a36b5240c458f9a7236ffa7e8fb4bb3e7a35b331764b5bf7b0ad
font_01_sfnt_off00006407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 18696 bytes
SHA-256: a6f9ee4f31e630697269259bd77ba9f20f050f36d84dfdb118abf4b75a264952

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