Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd9f200b84d96d6…

MALICIOUS

PDF

41.7 KB Created: 2021-04-25 10:00:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 30e28ee18bab044b51e302cdd48a7e08 SHA-1: 101d066c03067881e1770ce6c70cf194e8503444 SHA-256: 2fd9f200b84d96d6f25baee663e77fdb8bee56017aaa13275da4a2ef8a5532be
82 Risk Score

Malware Insights

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

The PDF document contains a lure to install a browser extension or plugin, a common tactic for credential theft or malware installation. It also embeds external URIs pointing to game cheat-related content, suggesting a social engineering pretext to download malicious files. No scripts were extracted, but the embedded URLs and the browser install lure indicate a high likelihood of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/use-cheat-engine-on-roblox-2021-game-hack PDF link annotation
    • http://www.drent.se/images/hack-for-freeeeeeeeeeeeee-robux-2021.pdfIn PDF document text
    • http://www.drent.se/images/lua-code-cheat-engine-roblox.pdfIn PDF document text
    • http://www.drent.se/images/injecthack-com-roblox-hack-injector.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-robux-without-waiting.pdfIn PDF document text
    • http://www.drent.se/images/how-to-cheat-health-on-roblox.pdfIn PDF document text
    • http://www.drent.se/images/roblox-free-items-glitch-2021.pdfIn PDF document text
    • http://www.drent.se/images/roblox-hack-robux-download-ios.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-money-in-roblox-lumber-tycoon-2.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-and-roblox.pdfIn PDF document text
    • http://www.drent.se/images/quick-robux-hacks.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
stream_003_off0000445e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x445E 26044 bytes
SHA-256: 3084b8cba358ea4397dd6d442c9432c8890cbe99ca47f51cf7494b4907214d90
font_01_sfnt_off00007e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E33 19276 bytes
SHA-256: 283492f464d31361ceb051e2389c1d693e74a2ff7f3dbf597e562603c78e82ed

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