Malicious PDF — malware analysis report

Static analysis result for SHA-256 048dfd0188ca0996…

MALICIOUS

PDF

46.2 KB Created: 2021-06-09 00:01:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4bbf6f5fb1aad2b07b340fb574e51327 SHA-1: 442e324c07cedf2be0531765ffabe0643812c45f SHA-256: 048dfd0188ca09964a203710f9fd3890cf9bba433db9e396373699c43392e9f8
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA heuristic, indicating it's designed to deceive users into performing an action. It also includes a link to a URL that is likely part of the malicious workflow. The document body, though partially corrupted, contains text related to 'Roblox' and 'free outfits', suggesting a lure for game-related cheats or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/sad-outfits-that-are-free-in-roblox-game-hack
    • https://bioscience.kyst.com.tw/image/data/files/free-coin-master-spins-2021_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/roblox-hacked-version-download_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-hack-tool-no-survey_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/hack-coin-master-net_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-robux-with-no-survey_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/get-free-robux-com_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-roblox-groups_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-apk-mod-free-download_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-pet-food-coin-master_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/robux-link_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-robux-without-human-verification-2021_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-coinmaster-spins_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-robux-generator-with-group_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-spin-rewards_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/script-musica-roblox-hack_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/how-to-hack-roblox-games_GM431946152.pdf
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-hack-game-download-ios_GM406889139.pdf
    • https://bioscience.kyst.com.tw/image/data/files/free-robux-just-click_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052bd.bin
77ce89fa77625301f71c021c0acd0c38ff6acac16b7137295ece1e3d8955e6c0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BD 26608 bytes
font_01_sfnt_off00009060.bin
0a2c7081810acdcb0f9888c081a3e6fd60c81f1e5555974ee3077c27b01383b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9060 18880 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.