Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f204a1cf22f510…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 23:14:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bd793176c393a63fe2e17c2f476cc8d4 SHA-1: 0ffb74ddc2acfe23786af3710dcd17c8092c8df8 SHA-256: 86f204a1cf22f51065b093348594aba7b64528c24294f0c7a021704b5102b0cb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to game hacks and generators, specifically mentioning 'Real Robux Generator'. It contains multiple embedded URLs, with the primary one being http://netcdn.tw/app/431946152/real-robux-generator-game-hack, which likely leads to a malicious site. The ML classifier strongly flagged this PDF as malicious, supporting the interpretation that it's designed to trick users into visiting a potentially harmful resource.

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/real-robux-generator-game-hack PDF link annotation
    • http://lib.mbp.ac.id/repository/ninja-legend-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-unlimited-money-cheat_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-create-a-roblox-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-free-no-scam-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-electric-state-darkrp-hack_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-hack-someones-roblox-account-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFA 22976 bytes
SHA-256: 817a1d9f7752dff6b93bb9ba84097191835b21fcdf183429e353085db7b56bda
font_01_sfnt_off000062a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 18728 bytes
SHA-256: d936d1152f37fb1a67b28162b0853760bae74ca086a621de8a620ee40eb20ebb

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