Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0e1dab3a928a32…

MALICIOUS

PDF

47.0 KB Created: 2021-05-12 15:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f685215d544e032e2302f915d5d078ea SHA-1: 947d599dbf60509f906c7d593ec1d7e3c608df60 SHA-256: 7b0e1dab3a928a32f1c84e825995e838c03baade45874da8bebf4ccab8e46107
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack generator, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.xyz/app/431946152/roblox-mobile-hack-game-hack PDF link annotation
    • http://oca.undil.tl/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000473e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x473E 28272 bytes
SHA-256: 2c57e06b27af4a4f489bf666fb350211784f8d5e9284a876054677a9a0088a4d
font_01_sfnt_off000087b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B1 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000094c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C3 18500 bytes
SHA-256: e5e44b7d88d65c0aa39187413bdce35fa7eb26b841b7c8af9c826d312b99eefc

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