Malicious PDF — malware analysis report

Static analysis result for SHA-256 7077d609e68cbd4a…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 12:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f378bb8ce4b8b8be5ac591f144ba011c SHA-1: 60e2c7b7a335b231e5b4b35bc3773bb6b84139e2 SHA-256: 7077d609e68cbd4a7e9e891a543fcf7065a28deba6ed0a9d8bb290bdf8a635a4
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.co/app/431946152/can-i-get-roblox-hacks-as-a-google-extension-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-robux-hack-page_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-boost_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-make-shirt-price-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-download-free-coins-apk_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_off0000302f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302F 22340 bytes
SHA-256: fb36d9720c5c7ccda6e0d474bb1779049da754db1670eca9e1c119eefa073a2d
font_01_sfnt_off0000620d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 18880 bytes
SHA-256: 555865a7bcd75a41faedb39809b745e7c3cfa4f078be85a783ef64dfe6695d45

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