Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4f7aca298fe3366…

MALICIOUS

PDF

45.5 KB Created: 2021-06-01 03:55:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4b1df5f2227045f1a82328079b25ebd6 SHA-1: 3a69a318e4868734fe572e87be5f627669e8bf18 SHA-256: b4f7aca298fe3366dc87767dddc31c9d135ddc02a4f09793e211714c4e0d1531
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.xyz/app/431946152/hack-roblox-accounts-2021-game-hack PDF link annotation
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-ways-to-record-roblox-with-voice_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/roblox-bone-break-cheat-engine_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/which-stuff-are-free-on-roblox-category_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-get-free-robux-really-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-money-in-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/cheats-roblox-survivor_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-robux-gift-card-codes-2021-on-images_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/cheat-engine-roblox-speedhacks_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/hack-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.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_off0000530b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x530B 25036 bytes
SHA-256: 6c5fd90f8b29ccc61298001280dbf2bfc2b882b4d090de03ca5f0ed0402107a4
font_01_sfnt_off00008d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6F 18828 bytes
SHA-256: 4a6a7081bcaf4e10d733bdfcd61bd1bc1d2383d6f7e309257551f50f0e9fd082

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