Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec3e811d937e8de…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 00:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f10298f4440a678297a326b913d988c3 SHA-1: 58c1ea7d09dcd09d4a8dac2d5459d5131a044a22 SHA-256: cec3e811d937e8de564f3e9f6a33b468696d1332c097628b6f5b0b762ff9742f
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA or human verification prompt, a common lure for users to click malicious links. The embedded URI and numerous other URLs point to sites offering 'free Robux' or 'Coin Master' cheats, indicating a scam or phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/no-scam-free-robux-game-hack
    • http://www.apocalissedigesucristo.com/images/can-you-play-minecraft-for-free_GM479516143.pdf
    • http://www.apocalissedigesucristo.com/images/free-coins-coin-master-2021_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/free-roblox-clothes-2021_GM431946152.pdf
    • http://www.apocalissedigesucristo.com/images/rbx-land-free-robux_GM431946152.pdf
    • http://www.apocalissedigesucristo.com/images/free-coin-master-spins-links-2021_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/coin-master-hacks-free-spins_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/minecraft-wurst-hacked-client_GM479516143.pdf
    • http://www.apocalissedigesucristo.com/images/free-robux-hack-us_GM431946152.pdf
    • http://www.apocalissedigesucristo.com/images/free-links-for-coin-master-2021_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://www.apocalissedigesucristo.com/images/free-avatar-roblox_GM431946152.pdf
    • http://www.apocalissedigesucristo.com/images/minecraft-java-edition-free-download_GM479516143.pdf
    • http://www.apocalissedigesucristo.com/images/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://www.apocalissedigesucristo.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/minecraft-dungeons-free-download_GM479516143.pdf
    • http://www.apocalissedigesucristo.com/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdf
    • http://www.apocalissedigesucristo.com/images/hackear-juego-coin-master-espaol_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/free-coins-and-spins-2021_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/coin-master-free-spin-ml_GM406889139.pdf
    • http://www.apocalissedigesucristo.com/images/coin-drop-master-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004989.bin
0ca1b30e133ed1b180c10f833a2b6afe90c06cb97d7771012813141f4b408bf3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4989 25128 bytes
font_01_sfnt_off000082be.bin
2df87bbe4e27b27e34c872c092d0522acd977d05f5cbde7ed5e1fdfeb59cb318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82BE 2984 bytes
font_02_sfnt_off00008d0b.bin
028f53d29b1a624cb68bae5e747b7c177b5cbf8f783d4c53e2642c12f49f399d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0B 18500 bytes

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