Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1eb96a1e971db82…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 19:09:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5fb1ad04d778c74929ff52f006ce4439 SHA-1: 0fdace10fc2bc019e11915790382df92f15fc956 SHA-256: e1eb96a1e971db82aeeaa8fb42ec75269bfa28847bd1a08bae7fe089ad9a8ba2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a 'free generator / game hack' redirect lure, pointing to the URL http://netcdn.tw/app/431946152/wahoogaming-co-free-robux-game-hack. The document body also contains this URL and references 'free robux', indicating a scam or phishing attempt. Although no scripts were extracted, the primary function appears to be directing users to a potentially malicious external resource.

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/wahoogaming-co-free-robux-game-hack PDF link annotation
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/game-toolbox_GM479516143.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/roblox-free-ninja-animations_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-clothes-roblox-girl_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/daily-spin_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.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_off000032ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CA 22356 bytes
SHA-256: ae12f43c3652949015ec568055c3244f95fad3da67ef002b548aebdbde844f77
font_01_sfnt_off000064a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 19460 bytes
SHA-256: 74065a4619e2e03bb286e1d51fa8cb1024f73915723fc40e3305b74db5537c96

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