Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd8eeff84c524ec…

MALICIOUS

PDF

36.3 KB Created: 2021-06-19 00:01:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cb4783b4409036c7be4ee08aeef5b5dc SHA-1: 1088b5c92e18db1fabe0a4927bb437c850324819 SHA-256: 3dd8eeff84c524eca8ca2f2e0aebf9bbd39e40e623c66192eb42a2a9a693f969
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/roblox-hack-2021-free-robux-generator-no-human-verification-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-gui-pastebin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/where-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-promocodes-that-stiil-work_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coins-master_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000033aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AA 22584 bytes
SHA-256: 904620d4396713050653c1c014980f8efd7e07e29ab022d696a21f0769f49cc1
font_01_sfnt_off00006620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 19980 bytes
SHA-256: a4d9488cd8e8d26cf96c1216d02bd5d0dd0192a05ee263fe82b366dacbf38082

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