Malicious PDF — malware analysis report

Static analysis result for SHA-256 342c8528bcee5a2a…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 21:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 87fea4d4d15099363676c5be3533e140 SHA-1: 122aad1f07c23c1fd6da5048433e9f36b5a1f340 SHA-256: 342c8528bcee5a2a37662b6f9ce48c4bcf3d1d8e1c34615427c8c182e58a11b5
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.tw/app/406889139/coin-master-cheat-codes-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/pubg-uc-and_GM1330123889.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-ninja-warrior-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-free-robux-and-tix-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-make-a-free-account-to-change-how-you-look_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-no-survery_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/notoriety-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-ashar-qaseem_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-robux-generator-hack-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-games-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hack-with-required-password_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_off000031fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FB 23144 bytes
SHA-256: bdc14076238202bda63e0ce20a7dab67a058c6507bcec06b24321b2d1c1b9b6b
font_01_sfnt_off00006604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 18176 bytes
SHA-256: 26a62ecd0968cd9678c349310edb0f5f45a7e82b4618ff7b0c0a30910d7092d7

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