Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c96c532e37bd24…

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 15:25:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d8d320ae433732069de68f63c511de9d SHA-1: c526f831b0aa42396f9d88ab13f8f046bc6293f2 SHA-256: 93c96c532e37bd24ceb2e10c9ff69fd1dd0dbadfa455699342500b083cc87648
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.tw/app/431946152/free-robux-without-survey-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/roblox-royale-high-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-there-an-actual-way-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-draw-roblox-tips_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/ex-7-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-medieval-warfare-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-rich-accounts-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/pubg-uc-2021-free_GM1330123889.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-roblox-hack-no-survey-no-human-verification-update_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/wiki-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/alvinblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robloxgamer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-200-robux-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
font_00_sfnt_off00002ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED3 22884 bytes
SHA-256: 1b7807e6c24bd8fa03f5db437316f36749cb067a2fe9cac8718dead0e8fe0891
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 19600 bytes
SHA-256: ea618dc0ac89057573f0900fc77451ab5142be89e827617cc4892c329dfdb229

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