Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d697bbdac866409…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 02:51:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a47d9caa85649cc07606f45d8e3c2783 SHA-1: 8a426082402517d23321d66be09e2805d8feef22 SHA-256: 2d697bbdac866409a5a890e632942fa8de3b24137555f818c005ef2d21d984c5
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/431946152/huskybuscom-free-robux-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-game-card-generator-download-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-codes-generator-no-surveys-no-download_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/f3x-hack-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/tiktok-free-view-40_GM835599320.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/todos-los-juegos-de-roblox-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/my-roblox-game-was-hacked_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-clothes-pants_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-accounts-google_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-jailbreak-2021_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_off0000306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306C 22916 bytes
SHA-256: 62d6c4d2454efc064c9bababde89c132d6897933c570c84c9f93d94249bbbeb9
font_01_sfnt_off00006371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 19324 bytes
SHA-256: fa71a02eff7d38361fd0194e941a22015f12e2817721f9ddba48d3de862e217b

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