Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebce6e30c70a61e3…

MALICIOUS

PDF

44.0 KB Created: 2021-05-17 16:42:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ee8b07d3c97597f0958005a67af5121f SHA-1: 6a86eb858acfec32cd21c9691cbaaa017559d877 SHA-256: ebce6e30c70a61e3b98037770cf67a4ede3c4ba2cfcb28ac87bfd65cd7e3bb6d
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, which is a common social engineering tactic to trick users into interacting with malicious content. It also embeds multiple URLs, including one pointing to 'netcdn.xyz', which likely serve as redirects to scam websites or downloaders for further malicious payloads. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/free-spin-link-for-coin-master-game-game-hack PDF link annotation
    • http://lllaw.eu/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lllaw.eu/images/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/infinite-robux_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lllaw.eu/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lllaw.eu/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004720.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4720 24496 bytes
SHA-256: a57317d345f8a25faec34f62f182b4b677e2e87d3782837d92f1c3ae189f0b67
font_01_sfnt_off00007f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6E 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8959 18316 bytes
SHA-256: 4ad106dc66915d7a7c54c506e35e2e74cb7406920644c521a55874c4c44ea7c2

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