Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a6311cf07e20ae…

MALICIOUS

PDF

48.0 KB Created: 2021-06-07 18:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5c9cab3b058d5f4585535084f32476ed SHA-1: 17a03bf3e12cd4e37c1dd76d878990fda635c3b4 SHA-256: 69a6311cf07e20ae5969824bf816e92361cef55025662d7f2f454f40bb1ba425
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9796

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.tw/app/431946152/roblox-popular-hacker-game-hack PDF link annotation
    • https://my-private-intendant.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://robuxhaxs.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5067 25900 bytes
SHA-256: 43d67947b5b1637c63e5bc6b13ec845ce398f73184d6a66ebeb113edefedbc84
font_01_sfnt_off00008b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B01 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000097a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A9 18652 bytes
SHA-256: c74b66033e6c2af68c16e029da947b8bec81e8a7d569448d11de59f53566d8c4

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