Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9810caeb5e8e5d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-08 07:34:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7a6d9fdeb533e6e89083b05f5a622187 SHA-1: 27ea08bbfec4a6021a5ce210c260c110a3e92928 SHA-256: ad9810caeb5e8e5d3ec1440f5e17ccbe4481229116a450403d6ca73644373451
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of 'free Robux' and game hacks to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/free-robux-easy-game-hack, is associated with a redirector, suggesting it leads to further malicious content or phishing pages. The document body and heuristics confirm the use of game-related lures and external URI redirection, indicating a social engineering attack.

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-easy-game-hack PDF link annotation
    • http://abdinusababellibrary.ac.id//repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/1-robux-every-second-for-free_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/roblox-hack-file-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/how-to-get-free-items-on-roblox-2021-no-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coin-master-spins-and-coins_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_off0000308a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308A 22748 bytes
SHA-256: bd0e0265e5ac127b70140fc25b51d09d92c1eaf4bb09c25c33e55c7cad4ba523
font_01_sfnt_off000063bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BF 18896 bytes
SHA-256: 08474bdc287d3651cd8985bef3354d1e01eac2de28e8a43cfa13c093cfea4674

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