Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f8d2b2469f1ec0…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 18:19:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4049021806d770c06242042eb30fc80f SHA-1: 278ae7d3c75976eb213a80a2f41565852161a12d SHA-256: 82f8d2b2469f1ec098a122ae6fe2e93dacd05773c1d7e3207157c58bdfcf7379
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button lure further support this. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting a site that likely hosts further malicious content or exploits.

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/how-do-you-get-free-robux-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/cheat-roblox-avoir-de-largent_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/download-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-promo-codes-for-roblox-clote_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-bc-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/info-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-25-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-games-that-give-you-free-items-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-mod-menu-pc_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/xonnek-hack-de-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/gengreating-free-roblox-redeeem-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/this-code-gives-you-1-billion-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-pastebin-no-wait-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-egg-hunt-2021-hacker-egg_GM431946152.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_off00002f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4A 22592 bytes
SHA-256: 3a8056ab02ce84d40c94c250fffb233b90f73ca87b5dee51e2fbda4460217fdf
font_01_sfnt_off00006174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6174 19316 bytes
SHA-256: 99209f55b8a3eadb57fc79f11dd938dc70b993b67b3cdd4e22b37a6312af6b20

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