Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed22696f4a29da6d…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 13:10:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5a2d602eea8de6f343da8476e97cc514 SHA-1: 6a314665d2331e99475cbbe5fd56bf0ef85461a2 SHA-256: ed22696f4a29da6d2f1feab90e1e3db5174f92cf30519965460ca6cfa650abdc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are hosted on a suspicious domain and appear to be part of a link farm designed to lure users with game-related content. The ML classifier also flagged this PDF as malicious. The presence of a 'download button' heuristic suggests a deceptive call to action, likely leading users to malicious websites or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-2021-free-spins-link-today-game-hack
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-website_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/free-coins-coin-master-2021_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/google-roblox-games_GM431946152.pdf
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-free-spin-codes_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/free-roblox-adopt-me-pets_GM431946152.pdf
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • https://www.takathmanduhotel.com/userfiles/files/free-spins-coin-master-links-blogger_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-free-coins-and-spins-group_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/real-coin-master-free-spins_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/free-coins_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/ways-to-get-free-robux_GM431946152.pdf
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/robux-free-online_GM431946152.pdf
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-new-cards-hack_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/how-to-hack-someones-account-on-roblox_GM431946152.pdf
    • https://www.takathmanduhotel.com/userfiles/files/free-coin-master-spins-link_GM406889139.pdf
    • https://www.takathmanduhotel.com/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c85.bin
d85e617c26355e96c6921d0e29bfcf0ab92f1c0b665a71739299ae3ff2cb7224
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C85 24160 bytes
font_01_sfnt_off0000836b.bin
1796d469d6688880968d5d589eff493e0f1aaa6a9dd62a8c2503fd741fb93e80
pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 18812 bytes