Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6b4ed50075ce43…

MALICIOUS

PDF

36.2 KB Created: 2021-06-25 17:15:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: feece8eb57b0e350265058885fb11b39 SHA-1: ddd65049da2353e0747398a3033c9851a8414a98 SHA-256: 6d6b4ed50075ce43279e5c0762a2941be77e5ebe818602ad4386609fbb7295ef
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains multiple embedded URLs and a document body that explicitly promises 'Free Robux' and 'game hacks', indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack vector appears to be directing users to malicious websites via embedded links, likely to download further malware or trick them into providing credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/how-to-get-free-robux-not-fake-2021-game-hack
    • http://ntfdubai.net/uploaded_files/userfiles/files/robux-hackhttps-pastebincom-mc23cpnm_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/coin-master-free-coin-and-spin-app_GM406889139.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-minecraft-alt-generator_GM479516143.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/wearedevs-roblox-hack-karava_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/coin-master-free-coins-link_GM406889139.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-spin-coin-master-today_GM406889139.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-roblox-avatar_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/tiktok-free-qr-code_GM835599320.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-camera-roblox-script_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/hacks-for-roblox-prison-life_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-cracked-minecraft-server-hosting_GM479516143.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/roblox-free-play_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/get-me-robux-for-free_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/cheats-coin-master-free_GM406889139.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/rbx-hut-promo-codes_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-robux-generator-no-verification_GM431946152.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdf
    • http://ntfdubai.net/uploaded_files/userfiles/files/how-to-get-hacks-for-roblox-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032f2.bin
a60afb591e9e4119dee06b52a588a98893eea6de93a301adc8834c89172425ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32F2 23012 bytes
font_01_sfnt_off000066c9.bin
0c64b5c1c4e4aabe41dbe7729bc6b912dc90b29703a2575165df57b35e916047		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C9 19556 bytes

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