Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e991d47d08d8d8…

MALICIOUS

PDF

43.3 KB Created: 2021-05-24 02:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b8efbcf97162aa2f33ad0a807abf232f SHA-1: 2ccc2e4d27bfcce0c3f21d3e55fe6f5d941590eb SHA-256: 92e991d47d08d8d8a9adf7f90519c43996d3dd9cffd86cfc0f75a51122b0b99a
82 Risk Score

Malware Insights

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

The PDF document uses a social engineering lure related to "Roblox Hacked Com 2021" and "free Robux" to trick users into clicking links. The presence of embedded URLs and the "Browser Install Lure" heuristic strongly suggest the document aims to redirect users to malicious sites for downloading malware or installing unwanted software. No scripts were extracted, but the overall pattern indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7429

Heuristics 4

  • 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 https://netcdn.xyz/app/431946152/roblox-hacked-com-2021-game-hack
    • http://elsenorcafe.com.co/images/oprewards-free-robux_GM431946152.pdf
    • http://elsenorcafe.com.co/images/free-coins-2021-coin-master-link_GM406889139.pdf
    • http://elsenorcafe.com.co/images/free-face-roblox_GM431946152.pdf
    • http://elsenorcafe.com.co/images/games-like-minecraft-but-free_GM479516143.pdf
    • http://elsenorcafe.com.co/images/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033bf.bin
6d4ce20aafe5684028fbf89d1af2aa6595a3a3bcec95f441149711405f71f90c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33BF 24016 bytes
font_01_sfnt_off00006a80.bin
5ecefea29f1d22630b6ab686ba705a5d6727a52121e80dfd99d223a6065fc418		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A80 8172 bytes
font_02_sfnt_off00008595.bin
1bdffeea421802d48c0c5f4972bc43262882194040db90b4400103ab0d186a68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8595 19016 bytes

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