Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef03e1d5b708f1e1…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 09:24:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 44682334b10792f2fbb7036564b72847 SHA-1: 5b767971edae7dc6096cbe087fa468dca6503018 SHA-256: ef03e1d5b708f1e10dee0031e175934cf8fd00b5ee3d65f9712f8ad63dcac469
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack lure. The document body and extracted URLs reinforce this, with the primary URL pointing to a 'how-to-sue-roblox-game-hack' page. While no scripts were directly extracted, the nature of the lure suggests it's designed to redirect users to a malicious site, likely for further exploitation or malware delivery.

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/how-to-sue-roblox-game-hack PDF link annotation
    • http://library.stieyapan.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/pubg-uc-price-in-nepal_GM1330123889.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000031f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F2 22304 bytes
SHA-256: 6e3230df268c5e61085c63b9424080e7ea3a7cb5653bea079406f514b861636a
font_01_sfnt_off000063a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A0 18788 bytes
SHA-256: 80b12915c33367b68fe221f0fa1a1fc917b12b464805dde29cb17cb2b73c3613

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