Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff2ed239babe97e…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 09:30:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f4d51c24d34d3f07c324c2cf8d7f42f3 SHA-1: e03fd1f72532fa40518678e745f4513d5cbef19b SHA-256: 2ff2ed239babe97eeebb88487de9f3ef2a2c49fe0a7632a29da32f8c12a5a5f1
82 Risk Score

Malware Insights

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

The PDF contains a prominent link to a site offering 'Roblox Vtool Hack', identified by heuristics as a game hack lure. This suggests the document's primary purpose is to trick users into visiting a potentially malicious URL. No scripts were extracted, but the embedded URLs and the 'GAME_HACK_REDIRECT_LURE' heuristic strongly indicate 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.co/app/431946152/roblox-vtool-hack-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-card-codes-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-critical-strike-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-micky-mouse-clothes_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-only-enter-username_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-fencing-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-tiktok-editor_GM835599320.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-use-cheat-engine-64-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-robux-card-hack_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3118 22180 bytes
SHA-256: b585f96a31023555079c7816e05186923bbb9d8250fa0197640008d497129f2a
font_01_sfnt_off00006261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6261 18896 bytes
SHA-256: a4bd62f20f4fc273ae2f64ef28c70ca6af81a2627f3ddf59b3dba692cf66cdaf

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