Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b4ae3f35ccb07e…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 00:00:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bf3bf37a0eead8dd2476fda58ac67990 SHA-1: 66388a27ef4a4b123d1b42bc5f5a4aa0fce4eed1 SHA-256: 07b4ae3f35ccb07e3e40bca9f035cfb61af718a4935fe363b5f9dd421688dc4b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or verification prompt to trick users into interacting with it, likely to initiate a download. The embedded URL points to a resource related to game hacks, suggesting a lure for potentially malicious software. While no scripts were directly extracted, the PDF structure and heuristics indicate an attempt to exploit user interaction for payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.xyz/app/431946152/roblox-hacks-2021-game-hack
    • https://7gking.tw/upload/files/coin-master-free-link-spin_GM406889139.pdf
    • https://7gking.tw/upload/files/coin-master-free-chest-link_GM406889139.pdf
    • https://7gking.tw/upload/files/how-to-actually-get-free-robux_GM431946152.pdf
    • https://7gking.tw/upload/files/roblox-script-hack_GM431946152.pdf
    • https://7gking.tw/upload/files/spin-links-for-coin-master_GM406889139.pdf
    • https://7gking.tw/upload/files/how-many-levels-are-in-coin-master_GM406889139.pdf
    • https://7gking.tw/upload/files/minecraft-hack-client-18-9_GM479516143.pdf
    • https://7gking.tw/upload/files/free-coins_GM406889139.pdf
    • https://7gking.tw/upload/files/microsoft-bing-free-robux_GM431946152.pdf
    • https://7gking.tw/upload/files/robux-fun-hack_GM431946152.pdf
    • https://7gking.tw/upload/files/minecraft-hack-download_GM479516143.pdf
    • https://7gking.tw/upload/files/roblox-help-free-robux_GM431946152.pdf
    • https://7gking.tw/upload/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://7gking.tw/upload/files/coin-master-free-spins-twitter_GM406889139.pdf
    • https://7gking.tw/upload/files/80-free-spins-coin-master_GM406889139.pdf
    • https://7gking.tw/upload/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdf
    • https://7gking.tw/upload/files/moonactive-free-spins-coin-master_GM406889139.pdf
    • https://7gking.tw/upload/files/how-to-get-free-unlimited-robux_GM431946152.pdf
    • https://7gking.tw/upload/files/coin-master-hack-spin-generator-tool_GM406889139.pdf
    • https://7gking.tw/upload/files/free-robux-com_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004932.bin
48a5f86a0343b666b8b6e5669333d3fb036d3eed3d385da2673f654c11049897		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4932 25036 bytes
font_01_sfnt_off00008271.bin
09e382df304bf090e7d4979f9a4a25aa7e11969d647bdc760e706e621b680adc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8271 18584 bytes

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