Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba567534a177fe39…

MALICIOUS

PDF

33.4 KB Created: 2021-06-25 22:08:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 372f5a39c553cced226e19dfd363255a SHA-1: 6919988211c3f8833b5fefe43acdfb7a066d27b4 SHA-256: ba567534a177fe39b7e7914e549a7ee40adbf3cd72b0f5d509fede8c3adbdb96
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to the URL http://netcdn.co/app/431946152/roblox-hack-players-game-hack. This URL is likely intended to lead to a malicious download or exploit. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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-hack-players-game-hack PDF link annotation
    • https://cogp.greentrade.org.tw/image/data/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-rich-roblox-accounts-passwords-2021_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-roblox-custom-templates_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/minecraft-java-edition-code-free_GM479516143.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_off00002cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFB 21972 bytes
SHA-256: 9fba8914c0de865c46e5ecb872e8334ee5fd4989c177700d5a0976d6acdb599e
font_01_sfnt_off00005d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D75 18992 bytes
SHA-256: df00090364682ec61133f3987d94009ea0f44ee9fbee25d100e4a732060f1689

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