Malicious PDF — malware analysis report

Static analysis result for SHA-256 049873ca651d094f…

MALICIOUS

PDF

34.1 KB Created: 2021-07-09 13:13:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3746e2d29363361e47a11382ab5f9af6 SHA-1: 46f7e3f4fccb192b83cd061a1c4d1b9c9ca98464 SHA-256: 049873ca651d094fbe9e085cc3d84f045da3a7a93cf72aa3541dc4d021473871
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/free-coin-coin-master-game-hack PDF link annotation
    • http://autoskola-scp.com/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-hack-on-iphone_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-no-human-verification-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robloxhacks_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/comment-hacker-roblox-macbook-pro-franais_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-link-2021-no-verification-deutsch_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_off00003101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3101 22576 bytes
SHA-256: 0c33c91910ab72c7d49065a4bfd76844a8d2b044bfa3df26d36da3df3006df64
font_01_sfnt_off00006382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6382 17996 bytes
SHA-256: e3fb1ca426c01543f38f1d1129ae452bef28a40365fbe99abf1b239340e30419

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