Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f453eb62c27e7a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 10:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 508cf01db8e990a97ed2a78329a76774 SHA-1: 6b33e9774ab762728281cdf3872b8dfed590416f SHA-256: 84f453eb62c27e7ad9e5bc3db70ffb1a5fab6392a08b0c7b134c13527bb9420e
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDFs promising Roblox hacks. The document body explicitly mentions 'Roblox Hack To Get Robux Without Human Verification' and includes URLs that likely lead to malicious content or further phishing attempts. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/roblox-hack-to-get-robux-without-human-verification-game-hack
    • http://pustaka.faterna.unand.ac.id/repository/roblox-speed-simulator-2-hack_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/install-roblox-free-robux_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/roblox-script-hacks_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-roblox-gift-cards_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/robux-generator-hack-2021-no-survey-november_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/roblox-games-to-troll-with-hacks_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/where-to-get-free-robux_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-not-fake_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-free-2021_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-a-free-elitey-pet-on-roblox_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-generator-2021_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdf
    • http://pustaka.faterna.unand.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdf
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-robux-for-free-and-fast_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/roblox-app-cheat-to-fly_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/free-pc-robux_GM431946152.pdf
    • http://pustaka.faterna.unand.ac.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fef.bin
ea11111e9a07a657f946a44ea693ee46b2f42cc4be51ccf1af99e43f24dfd7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEF 22308 bytes
font_01_sfnt_off000061a9.bin
06587bfe3c02070d5256b227272e4de00ec78e63bc0d03b31ac42606b1d5a166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A9 19776 bytes

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