Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c6746477e421c4…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 18:16:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f24daba3f025f3fa5ec50b846f98e092 SHA-1: 5c1ff83ab84157a043e78ba159a7e27d0156b258 SHA-256: 94c6746477e421c4c9d574b24968af95279893235c91a4faef6cab1b9b9742be
142 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF link farms. The document body and embedded links suggest a lure for free Robux or Coin Master spins, a common tactic for phishing or malware distribution. The presence of a fake CAPTCHA heuristic further supports the malicious intent to trick users into interacting with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/robloxhero.xyz-free-robux-game-hack
    • https://eyeonhimalaya.com/userfiles/files/free-spins-for-coin-master_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/free-robux-meme_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/free-robux-glitch-2021_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-link_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/how-to-earn-robux-on-roblox_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/free-robux-no-verify_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-tool-download_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-app-link_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/free-robux-just-click_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/free-roblox-com_GM431946152.pdf
    • https://eyeonhimalaya.com/userfiles/files/coin-master-hack-that-actually-works_GM406889139.pdf
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a97.bin
19680572c4845d78f0d737a80998cc4aa4edb2b65389ce71e5a169f7aba27588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A97 25564 bytes
font_01_sfnt_off00008544.bin
d96645d743d7bc7e16305d404e9ae036d13b2ec1544ce4a3e073a2af54c3cd1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8544 18584 bytes

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