Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c8ce1e37ab8ec0e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 06:13:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d0f046bcb377631373feb225349d2b0c SHA-1: fcfe8df8236daa231c6f2a34bc80cadcf37859a2 SHA-256: 8c8ce1e37ab8ec0ee1470ec44876f38a09bc67c5c767811474649ed54d6a2b06
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.co/app/431946152/claim-gg-earn-free-robux-for-roblox-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-faces-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-hack-gui-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-gfames-that-dont-take-password_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-btools-hack-2021-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-on-robloxxxx_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/who-to-get-free-robux_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_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 22308 bytes
SHA-256: dceb5c457adace2fc3b1facfbd527bc825806c7c6a5cebde2dea4fed1bcef428
font_01_sfnt_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 19168 bytes
SHA-256: 605893c8bb55a8176cdd4f08bab929113a18779fcb345838eba4c5d2b665a2af

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