Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75948d1193c843c…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 13:24:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8a1ec413e402ea999889774df4e69162 SHA-1: c99ddd41bf7f8c01649df41c7e0282414c5121e3 SHA-256: b75948d1193c843cfe03ef39aabd0cc652282825dbbf750a2ce269b3c303dccb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains multiple links disguised as game hacks and generators, specifically targeting Roblox users. The primary link, http://netcdn.co/app/431946152/roblox-big-paint-ball-executor-free-download-game-hack, is presented as a download for a game executor. This lure is designed to trick users into downloading potentially malicious software, aligning with a phishing or social engineering attack pattern.

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-big-paint-ball-executor-free-download-game-hack PDF link annotation
    • http://repository.ummy.ac.id/repository/how-to-cheat-your-values-in-roblox-boxing-simulator-2_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-free-admin-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-freerobux-real-working-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-robux-online-game_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-hack-roblox-without-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-free-money-on-roblox-meep-city_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/robux-now_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-free-robux-android-1_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/gamnes-that-give-free-robux-without-pass_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-hack-a-account-with-btools-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/getbux-me-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/draw-free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-do-you-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-hack-other-peoples-invertorys-on-roblox-adopt-me_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_off000031fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 22868 bytes
SHA-256: 43ef64c94b97454873b75bf3c3c2a331080527ef2cd81ac6afd5203b92f10c2b
font_01_sfnt_off00006525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6525 19672 bytes
SHA-256: a2e4debbf9a8755d667f2802da3f9a9022dda9cd78f399acb1a1ee9fb0cad532

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