Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67b6b746223b190…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 03:49:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: df908fb93caf73e54490d9ac85806663 SHA-1: 1aa9edbae51df21099adb85433bafc7f361c7684 SHA-256: c67b6b746223b1902a8037d0d35a413c41a9955f2f015f24cee279e7a3cda3bc
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/479516143/how-to-get-minecraft-coins-for-free-game-hack PDF link annotation
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/robux-for-free-generator_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/robux-gratis_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/lua-executor-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-hack-a-group-on-roblox-to-own-it_GM431946152.pdfIn PDF document text
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-robux-hack-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_off00003329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3329 22292 bytes
SHA-256: f325e7839e9e1589229d1faa580a0fa3a76210b0fa776f631dbe314c01d63829
font_01_sfnt_off00006469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 18164 bytes
SHA-256: 08cfef77cd0745aa004e30d27b19be38b0f906a11dfdef7a7ac194d78643726e

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