Malicious PDF — malware analysis report

Static analysis result for SHA-256 4198a2088c6e9f81…

MALICIOUS

PDF

32.6 KB Created: 2021-06-29 08:25:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d03f0298582cfecfa65543821d022f83 SHA-1: d57beaac260e911e8886de4072ac7d9b92740c21 SHA-256: 4198a2088c6e9f818ad22a0d72d8a7417e68fa3d57a4f79273374aa41e7ccaf9
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 0.9824

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-top-free-robux-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/code-pour-des-roblox-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacker-names-list-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-chrome-extension_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/fastbucks-me-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-murder-mystery-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/microsoft-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-item-codes-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/conor3d-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/google-chrome-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-robux-for-free-2021_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_off000029ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29EF 22100 bytes
SHA-256: eba6313711546a5fd56ae2b17ad46acc5ebbac59f18700febefdea25bcd13b4e
font_01_sfnt_off00005ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD0 18968 bytes
SHA-256: 285ac19f348f48ecd636c36bf75a5ebafe83f3d45f04b66d843b866306a25049

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