Malicious PDF — malware analysis report

Static analysis result for SHA-256 362427a768f05781…

MALICIOUS

PDF

43.7 KB Created: 2021-06-04 00:29:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0943d68ac51825dda057e00e15034c55 SHA-1: 5bc7aca24aa6f1dbda8cbea7d0f4f09be14d3a40 SHA-256: 362427a768f057813c0cd4c2c0d62ae1759e397007f9e44b894df5a034dc5d7c
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 0.9865

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/406889139/how-to-hack-coin-master-apple-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/mcpe_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-com-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
stream_004_off00004fd0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD0 24816 bytes
SHA-256: 16668e0f877233ebe19f10500dfae2886b55376b072b27fa642daae7552082fe
font_01_sfnt_off000088ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AE 18128 bytes
SHA-256: b6a735d9e3f53415aa491e3485cc1cfcf2c3f420c3f64ca45b3fcf2c99820254

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