Malicious PDF — malware analysis report

Static analysis result for SHA-256 306c156b648aaca3…

MALICIOUS

PDF

42.9 KB Created: 2021-05-10 20:09:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b4ca82e4f9681543478115fbf30949c4 SHA-1: 78315dacf9f19f9908ab117d447c504b3371ce48 SHA-256: 306c156b648aaca3d1cd16451f6434556126cdcdbec241c1fc06866df4eb950e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Roblox money' and 'game hacks', directing users to a suspicious URL. The ML classifier strongly 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 potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-do-you-get-free-roblox-money-game-hack PDF link annotation
    • https://ccej.lviv.ua/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/descargar-coin-master-hackeado_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
stream_003_off00004986.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4986 25112 bytes
SHA-256: 687dfec44a3dd23ebfd79dd28d37dfa3e69a7e6e16d20047edf6b6ddd6d799c5
font_01_sfnt_off00008326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8326 19064 bytes
SHA-256: 94f9efcc29addd786a26302115b4c31227e6eded102cc07b8eb042232f1d4f5b

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