Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ed9be68f327be2…

MALICIOUS

PDF

44.8 KB Created: 2021-05-19 03:04:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dc4e6eeb2cf4288be335532f89a5879f SHA-1: e8cb2c595ab5108b2540095feb8736d027816763 SHA-256: b1ed9be68f327be2bb03a6d0c6d79f5b665ad62e2d1edaa11e1234a27e8c1e61
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, identified as a link farm, with many pointing to game-related cheat sites. The primary URL, https://netcdn.xyz/app/406889139/how-to-get-free-spins-on-coin-master-2021-ios-game-hack, suggests a lure for game-related exploits or scams. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/how-to-get-free-spins-on-coin-master-2021-ios-game-hack
    • http://greenoase.be/images/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • http://greenoase.be/images/free-minecraft-java-edition-codes_GM479516143.pdf
    • http://greenoase.be/images/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://greenoase.be/images/coin-master-free-spins-ios-app_GM406889139.pdf
    • http://greenoase.be/images/hack-xp-net-coin-master_GM406889139.pdf
    • http://greenoase.be/images/minecraft-xbox-one-free_GM479516143.pdf
    • http://greenoase.be/images/coin-master-date-and-time-hack_GM406889139.pdf
    • http://greenoase.be/images/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • http://greenoase.be/images/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://greenoase.be/images/uprobuxcom-free-robux_GM431946152.pdf
    • http://greenoase.be/images/roblox-free-items-glitch_GM431946152.pdf
    • http://greenoase.be/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://greenoase.be/images/free-robux-no-verification-required_GM431946152.pdf
    • http://greenoase.be/images/free-coin-master-generator_GM406889139.pdf
    • http://greenoase.be/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdf
    • http://greenoase.be/images/free-coin-master-cards_GM406889139.pdf
    • http://greenoase.be/images/coin-master-free-spins-hacktman_GM406889139.pdf
    • http://greenoase.be/images/roblox-hack-download_GM431946152.pdf
    • http://greenoase.be/images/robux-hack_GM431946152.pdf
    • http://greenoase.be/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004849.bin
3f78ded7c23604d94e3ab58b3cc705a161bb784e1474c3863cade00f4a334365
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4849 25144 bytes
font_01_sfnt_off000081fc.bin
1658a022109436bc779ad4517058e1307ef690d1161dd6b1b99a4744abf5fed3
pdf-font-stream PDF embedded font (sfnt) at offset 0x81FC 2864 bytes
font_02_sfnt_off00008bd9.bin
1a65c7fcb9bad972bd4806159ebd9204317f4feb10db53d1e42ac086b2fa499a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD9 18452 bytes