Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8ecf87e8ffed9d…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 16:10:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c9a66071a3540d8a6c37cf78e0d7ba1f SHA-1: 48e6f06ce94ff4077d855d6d769f3c947dbbbf18 SHA-256: 9a8ecf87e8ffed9d66efaa61711bb70ef55731855806a591a9f985c4aac4ae1b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links disguised as game hacks and free currency generators for popular games. These links likely lead to malicious websites designed to download further malware or phish user credentials. The ML classifier strongly indicated maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the embedded links.

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/free-stuff-in-roblox-august-2021-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/cheat-codes-for-building-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-ro-hack-roblox-account_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/javascript-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-free-robux-generator-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-complete-free-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/please-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/codes-to-hack-roblox_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_off000031b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B4 22244 bytes
SHA-256: 111d04930b538de5a1f14c525e00aba14de85e29d0febbbfe0ab32bd899b4c37
font_01_sfnt_off00006333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6333 19296 bytes
SHA-256: 41ec0bf12af69e336823931a3f065c43feb3eee00dceb98495895a691d5b2b0e

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