Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3ae54f2f0f33f9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-02 07:58:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 65e89a76418d3d51d0e9187db307bdc1 SHA-1: 2ced83ba52d1415a49e91fc3fc779d2702f8348d SHA-256: 9b3ae54f2f0f33f939c4232d313da51121e4b2701d9d231bc20e4a1c76bf4503
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 0.9980

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.co/app/431946152/roblox-btool-hack-ultmate-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-de-allahua-kabar-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/paid-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-hacks-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-account-robux-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cheat-engine-roblox-tricks_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-explorer-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/sistem48-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-trainer-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/jailbreak-cheats-roblox-money_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-pastebin-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000031a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A1 22760 bytes
SHA-256: 8f165a22b00a03bff2c43971c8f54377ed2568f545bd4e9e3a55d23285ad8fbc
font_01_sfnt_off00006481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 19020 bytes
SHA-256: c60b95367f99284718c3209a81ee9d45fbe16fe0d288eb7eea47ff30ebeae73b

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