Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d2cc1394b4386a…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 21:07:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6b17309ef3b05c7d846716c840d3e4d4 SHA-1: 181d3f36b44d69271be860e75785036f7dc5ef8f SHA-256: e3d2cc1394b4386a031697959e75ad10f5261bf03d791f3799b3337c98fce378
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, encouraging users to click on embedded links. The primary link, https://netcdn.xyz/app/406889139/free-unlimited-coin-master-400-spin-link-game-hack, likely leads to a malicious download or exploit. The presence of multiple similar URLs suggests a campaign distributing potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-unlimited-coin-master-400-spin-link-game-hack
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-minecraft-worlds_GM479516143.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/robux-hack-free-robux_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/free-outfits-roblox_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/javascript-free-robux_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/a-lot-of-robux_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/real-free-robux-codes_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-hacks-that-work_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/daily-free-spins-coin-master_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/claim-free-spins-coin-master_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-robux_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/roblox-robux-generator-2021_GM431946152.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-hack-xyz_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://www.travlbuzz.co.uk/uploaded_files/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a86.bin
59f02dd4ad1958abc832055f2dcf33f5c0b8e5fbf9928054fa6604f6d2bb4f1f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A86 25304 bytes
font_01_sfnt_off0000830d.bin
2e007fc84fc568f88879723ba48bdd06936c094fc864f4c5a558b00572ac3444
pdf-font-stream PDF embedded font (sfnt) at offset 0x830D 18984 bytes