Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb268775cafbc1e1…

MALICIOUS

PDF

44.8 KB Created: 2021-04-28 07:12:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f812c1b51a1f6b42ec7d20f27efbaae8 SHA-1: 790fc1dc48d6a3f4b3e448202be2e33b89aaf8d5 SHA-256: fb268775cafbc1e1ac4924eaa8fb04eca62610601257826480b814b0e589829b
82 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is malicious and attempts to lure the user into installing a browser extension or viewer. It also contains embedded URLs pointing to files related to Roblox hacks and cheats, suggesting a social engineering tactic to trick users into downloading malware. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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/www-free-robux-party.com-game-hack PDF link annotation
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-deathrun-hack-script.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-speed-run.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-apocalypse-rising-cheat-engine-codes.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/cant-open-cheat-engine-with-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/yoink-hack-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/new-cheat-roblox-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-hide-and-seek-game-for-free.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-promocodes-hacks-pastebin.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-app-for-ipad.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/ipad-roblox-cheats.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004207.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4207 25796 bytes
SHA-256: f04a446944d92ab00881fa7d3564244b7110b99990ef833a70b9eda46954e11f
font_01_sfnt_off00007d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2F 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000089d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D7 19368 bytes
SHA-256: cdf9a0f43e7f35e37cade6a6bc601be5ffa5c16ef3efcb2ab5f3a1ada65676bd

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