Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ce3da9d84f7cf6…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 05:05:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 60d382612d555e151c00bf2a780363af SHA-1: 032518d91c17c4e60d1cf0fa0cd3d763df4e1b28 SHA-256: 30ce3da9d84f7cf68d0f2c77086d4e2d2c8fe900e415ea466e963f0d675365b6
142 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs promising free Robux or game hacks. The document body explicitly mentions 'Roblox Hack' and includes a direct link to a download, indicating a social engineering lure to trick users into downloading a malicious file. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/roblox-hack-pets-simulator-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-on-roblox-windows-10_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-without-buying-it_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-stuf-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-fly-hack-in-tower-of-hell-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-password-generator-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-and-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-card-generator-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-generator-2021_GM431946152.pdfIn 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_off00002c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7E 21652 bytes
SHA-256: 5db865ce7be245221eb26abeb7810d710d52f9e393b386f29286d47799497d0a
font_01_sfnt_off00005c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C16 19248 bytes
SHA-256: 09cf7b72f79c5dfecca824fcf024bf258da164842024e574fdbc019ccace334e

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