Malicious PDF — malware analysis report

Static analysis result for SHA-256 68efe08639cb04b0…

MALICIOUS

PDF

35.4 KB Created: 2021-07-02 01:10:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 80ce9565ee064ec8a241b06af7b3ec4c SHA-1: 17d5a66fe34d7ce3509cd378a94cd1339795627d SHA-256: 68efe08639cb04b0d6baaf143285f4ce02e719babec8dae4ec53e6b7f4e34d20
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document uses a game hack lure to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/roblox-how-to-get-a-free-dominus-game-hack, likely leads to a malicious site or a phishing page. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or redirect users to malicious content, aligning with common PDF-based malware delivery tactics.

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-how-to-get-a-free-dominus-game-hack PDF link annotation
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-roblox-ts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-roblox-accounts-bugmenot-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/hacking-on-ipad-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/pubg-300-uc-free_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/how-to-get-free-robux-by-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-h-robux-aniversery-giveaway_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-studio-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-we-are-devs_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-lobby-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-no-verification-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_off00003174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3174 22532 bytes
SHA-256: 6987a646ef08e5715f259cb27a1d0d278b127a3fb0497fa52806dee6300ee067
font_01_sfnt_off000063e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E8 19608 bytes
SHA-256: a8e457ea12e3d4e50c79f21b36780e206c7f3d3ace141efe5d24e90c73d6a394

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