Malicious PDF — malware analysis report

Static analysis result for SHA-256 9030d6ccfe8dfb91…

MALICIOUS

PDF

47.9 KB Created: 2021-06-07 10:12:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 338813a24b43729ad6fff735da3edeca SHA-1: 7046cb1c001e62697118e7e4fd9989b89b575fa9 SHA-256: 9030d6ccfe8dfb91c674fedbbb74718e40f738a14130b215a547345bad5e65f5
82 Risk Score

Malware Insights

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

The PDF contains a fake CAPTCHA heuristic, indicating a social engineering attempt to trick the user into performing an action. It also contains an embedded URI pointing to a URL associated with 'roblox-robux-hack-generator', suggesting a lure for game-related cheats or hacks. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/roblox-robux-hack-generator-2021-game-hack
    • https://www.apartmanychorvatsko24.cz/images/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/rbxoffers-com-free-robux_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/is-coin-master-hacks-safe_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-minecraft-server_GM479516143.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-coin-master-spins-and-coins_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/how-to-get-free-premium-roblox_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-coins-coin-master-2021_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-roblox-accounts-that-work_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/minecraft-creative-mode-free_GM479516143.pdf
    • https://www.apartmanychorvatsko24.cz/images/coin-master-card-collection-hack-2021_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/coin-master-spins-hack_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/coin-master-free-coins_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/robux-sites_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/sites-to-get-free-robux_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-tiktok-followers-without-verification_GM835599320.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-coins-for-coin-master_GM406889139.pdf
    • https://www.apartmanychorvatsko24.cz/images/free-robux-no-generator_GM431946152.pdf
    • https://www.apartmanychorvatsko24.cz/images/minecraft-font-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051d5.bin
359bf27002a2fa86f90bc9d622daa88b223beaf85a427447a2533043d64f6368		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D5 25472 bytes
font_01_sfnt_off00008cf6.bin
baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF6 2844 bytes
font_02_sfnt_off000096b8.bin
0a2b22d7b93b88dd1df129fbb30abec3c28ac905508420b4f9671e74ddd4f9ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B8 18828 bytes

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