Malicious PDF — malware analysis report

Static analysis result for SHA-256 da18c7d229b710e7…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 13:13:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 049c1193b0131451ecdcb81c06b4634a SHA-1: 78c6c25bfd968fe1632ef63631cfb9a3b836e41d SHA-256: da18c7d229b710e78debd5b5c50310b25fc609755a31388abdeb51eefc82bbca
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to 'free Robux' or game hacks, suggesting a phishing or scam lure. The presence of a fake CAPTCHA heuristic indicates an attempt to trick the user into interacting with the document, likely leading to a download or further redirection. No scripts were extracted from this sample, but the overall structure and content point towards a social engineering attack.

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.
  • 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 http://netcdn.co/app/431946152/free-robux-gift-card-codes-march-2021-game-hack
    • http://perpus.i2s-learning.com//repository/robux-hack-2021_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/roblox-bluestacks-hack_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/free-robux-codes-2021-not-used_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • http://perpus.i2s-learning.com//repository/coin-master-20-free-spins-link-today_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/hack-roblox-lumber-tycoon-2-fly_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/free-robux-code-no-hacking-accounts_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/google-play-coin-master-free-spins_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/free-spin-app-coin-master_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/roblox-hcbb-hack_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/mc-update_GM479516143.pdf
    • http://perpus.i2s-learning.com/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/free-coins-for-coin-master_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/pubg-uc-hack-without-human-verification_GM1330123889.pdf
    • http://perpus.i2s-learning.com/repository/best-free-spin-app-for-coin-master_GM406889139.pdf
    • http://perpus.i2s-learning.com//repository/free-robux-not-fake_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/y8-roblox-free-game_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://perpus.i2s-learning.com/repository/real-coin-master-hacks_GM406889139.pdf
    • http://perpus.i2s-learning.com/repository/getrobux-come_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003035.bin
fbd81e18d8c867cc24a9f9f1deba56ea192ea5534f1e1c2757e686eb0cbd4ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3035 22140 bytes
font_01_sfnt_off00006153.bin
029fb872f8323e0492102bf3b369981763bae79178da4588473030b99c6707c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6153 19880 bytes

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