Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aff872a9b2cdaa3…

MALICIOUS

PDF

45.9 KB Created: 2021-05-13 13:09:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7d6b798768bfbc27bf366aa39c566276 SHA-1: 30fe6d462b7ee15f35b9b1f9118774bcf8599ef8 SHA-256: 4aff872a9b2cdaa33d1f346a99999f2a90d4b1237c81faf659704ce2e5696b3d
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, a common social engineering tactic to trick users into clicking malicious links. The embedded URL and numerous other URLs point to potential download sites for further malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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.xyz/app/431946152/earn-free-robux-today-game-hack
    • http://demenagementlandry.com/images/coin-master-free-gold-cards-link_GM406889139.pdf
    • http://demenagementlandry.com/images/coin-master-free-spins-2021_GM406889139.pdf
    • http://demenagementlandry.com/images/minecraft-free-minecoins_GM479516143.pdf
    • http://demenagementlandry.com/images/coin-master-hack-without-verification-code-2021_GM406889139.pdf
    • http://demenagementlandry.com/images/coin-master-free-spin-realme-products_GM406889139.pdf
    • http://demenagementlandry.com/images/free-robux-hack_GM431946152.pdf
    • http://demenagementlandry.com/images/coin-master-free-spain_GM406889139.pdf
    • http://demenagementlandry.com/images/roblox-april-fools-hack_GM431946152.pdf
    • http://demenagementlandry.com/images/coin-master-free-blogspot_GM406889139.pdf
    • http://demenagementlandry.com/images/roblox-royale-high-diamond-hack_GM431946152.pdf
    • http://demenagementlandry.com/images/free-robux-no-scam_GM431946152.pdf
    • http://demenagementlandry.com/images/coin-master-free-cards-hack_GM406889139.pdf
    • http://demenagementlandry.com/images/claimrbx-free-robux_GM431946152.pdf
    • http://demenagementlandry.com/images/how-you-get-robux_GM431946152.pdf
    • http://demenagementlandry.com/images/is-minecraft-free-on-mac_GM479516143.pdf
    • http://demenagementlandry.com/images/earn-rbx_GM431946152.pdf
    • http://demenagementlandry.com/images/javascript-free-robux_GM431946152.pdf
    • http://demenagementlandry.com/images/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://demenagementlandry.com/images/blox-rewards_GM431946152.pdf
    • http://demenagementlandry.com/images/get-free-robux-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f5.bin
2afd720ec33aef3d40146b1bf492257e936e6707a755d934c46f6f663da2a213		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F5 25776 bytes
font_01_sfnt_off00008608.bin
02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8608 2912 bytes
font_02_sfnt_off00009005.bin
856adb635f1df42b1ab7aec7f905735c2cb2dfebd4088312a1c80dc48447787c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9005 18596 bytes

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