Malicious PDF — malware analysis report

Static analysis result for SHA-256 647012f29cf5e4a3…

MALICIOUS

PDF

36.9 KB Created: 2021-07-03 11:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d08e601381e6dac6b1c485fc083233c9 SHA-1: 83b25a4ade8a8f9c811ef5cdac6ecf784e11ef77 SHA-256: 647012f29cf5e4a319ec9cdc7df0a52968e6965b4778d22e242865d2ff07b8fe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to the URL http://netcdn.tw/app/431946152/free-robux-with-no-human-verification-game-hack. This URL is likely a redirector to a malicious site or a download for further malware. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or social engineering campaign.

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/431946152/free-robux-with-no-human-verification-game-hack PDF link annotation
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-hack-steal-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/robux-premium_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/qtx-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/roblox-vehicle-tycoon-hack_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000034b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B7 23240 bytes
SHA-256: 6206afb55a8090ff37da522241a778afb17caae1ba4070543875f593b79a13dc
font_01_sfnt_off00006976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6976 19700 bytes
SHA-256: 35e501b9c45e5927f0fc62a5ada2d4fbbc4f1128da3636f490de4bd32383e5b5

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