Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e180afe5180d215…

MALICIOUS

PDF

43.5 KB Created: 2021-06-11 01:04:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 73159811f598983000eca38d3a180608 SHA-1: 294703fe76aa6f25aa98e4443b3ac5ba6d91a89f SHA-256: 8e180afe5180d21543326dba135f70b3bc7e55b95eab8a30e6fee0571badd347
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to trick the user into interacting with it, likely leading to the download of a second-stage payload from the embedded URL. The ML classifier strongly indicated maliciousness, and the presence of multiple URLs related to game hacks suggests a lure for potentially unwanted software or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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.tw/app/431946152/are-free-robux-real-game-hack
    • https://ceranique.nl/images/roblox-magic-simolator-hack-script_GM431946152.pdf
    • https://ceranique.nl/images/free-robux-without-verification-or-survey_GM431946152.pdf
    • https://ceranique.nl/images/how-to-get-robux-on-phone_GM431946152.pdf
    • https://ceranique.nl/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • https://ceranique.nl/images/minecraft-wurst-hacked-client_GM479516143.pdf
    • https://ceranique.nl/images/coin-master-hacks-2021_GM406889139.pdf
    • https://ceranique.nl/images/coin-master-hack-that-actually-works_GM406889139.pdf
    • https://ceranique.nl/images/free-robux-card-codes_GM431946152.pdf
    • https://ceranique.nl/images/robuxglobalcom_GM431946152.pdf
    • https://ceranique.nl/images/kachifpro_GM406889139.pdf
    • https://ceranique.nl/images/minecraft-bedrock-edition-free_GM479516143.pdf
    • https://ceranique.nl/images/how-to-get-minecraft-coins-for-free_GM479516143.pdf
    • https://ceranique.nl/images/coin-master-spin-blogspot_GM406889139.pdf
    • https://ceranique.nl/images/minecraft-dungeons-free-download_GM479516143.pdf
    • https://ceranique.nl/images/pokemon-go-free-hack-apk_GM1094591345.pdf
    • https://ceranique.nl/images/minecraft-free-online_GM479516143.pdf
    • https://ceranique.nl/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://ceranique.nl/images/free-multiplayer-minecraft-server_GM479516143.pdf
    • https://ceranique.nl/images/coin-master-free-spins-link-download-ios_GM406889139.pdf
    • https://ceranique.nl/images/roblox36com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fd5.bin
d88e080df95e209ff20e08c517da1520bff53826b09c22f5f8fd206caf2a93ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FD5 24836 bytes
font_01_sfnt_off00008738.bin
dfda2edfaaef5c5b93784be00eac530bff2bd4263fba8252791eb613965dfb59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8738 18316 bytes

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