Malicious PDF — malware analysis report

Static analysis result for SHA-256 0745d8ec5089d04e…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 17:51:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3643490085e94d999eeb95e4dce0b8b6 SHA-1: 17b5ae794ce180abfa1d66fe23549d3775ae7f6a SHA-256: 0745d8ec5089d04e6b281e54b5a1f7f55f57bdb085e6f95584bc7adc5383ce89
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/835599320/free-college-textbooks-tiktok-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/best-free-server-side-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-day-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-free-role-high_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-slash-ghostemane-roblox-id_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/more-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/slurp-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/extra-ultra-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-roebucks_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_off00003060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3060 21452 bytes
SHA-256: b39700a82230fcd19196b09f874ed2b0f584996cc63f5663224b1e6f64a42398
font_01_sfnt_off00005f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F30 18416 bytes
SHA-256: cdc16ca39fa73cf68f8c49219d219fafe3612aafbc02059d1e064d4f5fa2e8db

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