Malicious PDF — malware analysis report

Static analysis result for SHA-256 1786535bd8a0a410…

MALICIOUS

PDF

33.6 KB Created: 2021-07-07 16:00:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2b6c038bca2c54651daa2752b13cfd3c SHA-1: 9874388955aebc249f82b0ce6d7b6fd5109f9523 SHA-256: 1786535bd8a0a410f1e5c03169dfc30011def47d4aa5cf76a2576395ab8c2936
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 0.9824

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/apps-that-give-you-free-robux-game-hack PDF link annotation
    • http://autoskola-scp.com/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://autoskola-scp.com/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/earn-robux-online-hack_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-hack-2021-website_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-very-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-no-scam-no-survey_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-lua-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-island-2-hack_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-cheat-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000029ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29AB 22788 bytes
SHA-256: a9a4ab7a4004cba7672343f7a7d09505d1679e69ccd1882bdc105b31b73032f3
font_01_sfnt_off00005cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF4 19560 bytes
SHA-256: 44687920bbab424739eb00f0c10a6a4a3701389ccd8aaf990bb054a3fc46e25a

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