Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2c72a7bcd385e0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-23 10:45:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5a8124923f494306a0dad80d3da2f6ca SHA-1: 74fe17aa72a43d739d102ad8290e097293342740 SHA-256: 6c2c72a7bcd385e08b6ff73ecaa279cb36b92966d51cb0966dd17e884de68aab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for free in-game currency or hacks, directing users to the URL http://netcdn.co/app/431946152/get-me-robux-for-free-game-hack. This URL is likely to host a malicious payload or lead to further phishing attempts. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a download button lure support this assessment.

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/get-me-robux-for-free-game-hack PDF link annotation
    • https://sensorcamera-tw.com/upload/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/cool-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/hack-vampire-hunters-2-roblox-fly_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/denis-free-robux-website_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-spin-hack_GM406889139.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_off0000309f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309F 22792 bytes
SHA-256: 69e62d9c9db92605a1953ef580dedcb2a2e50ff464b079308c3d587cdbf64d5f
font_01_sfnt_off00006396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6396 19016 bytes
SHA-256: feaab394b075859e694c399921b9b5bf0523619dd427b317c2360992586738dc

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