Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c8a51fad8055e2…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 17:59:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fd2986080fd6af65fcdb872509ab894c SHA-1: 3c143252d832af30dd62ddf3192acde2ece751ef SHA-256: 10c8a51fad8055e267718d09099d93e19c5f37bb87021e2a12450b6bd7811b08
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, pointing to sites offering 'free Minecraft Realm Codes' and other game-related cheats. The primary IOC is the malicious redirector URL.

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/479516143/free-minecraft-realm-codes-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-deathrun-cheats-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/top-car-games-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-developer-product-ids-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/go-to-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/what-happens-if-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-fortnite-island-royale-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-no-clip-cheat-engine_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/bux-city-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-aimbot-hack-for-nerf-fps_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/new-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-hacks-2021-no-survey_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_off000031e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E3 22596 bytes
SHA-256: ff5c95af1bb7705497efbd623c895a7ed5f33a073549f557d44490fd2ca4de08
font_01_sfnt_off00006451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6451 18508 bytes
SHA-256: b41cdb960d08f430dcae025247c0b7a65a811430307fe7cd8a623f6c3b070d38

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