Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f19c32aa0a3bbe5…

MALICIOUS

PDF

45.8 KB Created: 2021-06-04 04:57:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c893924609b9e304b669e62720cd93e3 SHA-1: 8598e04372e2a4972b1904a59e920f1024747003 SHA-256: 6f19c32aa0a3bbe580f08cfd5b5cf0d4d67f771ee7d3e41117b400a069bad83f
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 0.9864

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 https://netcdn.online/app/479516143/is-minecraft-realms-free-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-texture-packs_GM479516143.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_off000051f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51F3 28472 bytes
SHA-256: f6e5dcc692b08c68c832e53228127ac35bad12cefb67bc0363ad359d69fce49f
font_01_sfnt_off0000921e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x921E 17900 bytes
SHA-256: d94e88f400a91da589c267152ab3bcd3a3c7a79749ad17c8252b3458dd298181

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