Malicious PDF — malware analysis report

Static analysis result for SHA-256 8502022102c91ba5…

MALICIOUS

PDF

42.9 KB Created: 2021-05-19 06:07:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a579cf677391736f8c2ad761e57cba7e SHA-1: d5ba9810c3b7d7b058e9bc4423f4d999264f2e36 SHA-256: 8502022102c91ba524cb028614d6514ce5a10989804a24536f9308a5474323a8
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as SEO-optimized links to game-related cheat/hack content. The presence of a link to 'netcdn.xyz' and a large number of PDF links suggests a link farm designed to drive traffic to potentially malicious downloads. The ML classifier also strongly flagged this PDF as malicious.

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-3.4-6-hack-game-hack PDF link annotation
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/www-robux-com_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C53 25516 bytes
SHA-256: 1184ff6774accfcd516e45cb93517844da8ad5a30c02f90c72afb25c38fd86e0
font_01_sfnt_off00008554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8554 18188 bytes
SHA-256: 417d22065da81414d5b8a7662938c361df9383972de83decc4a47860b2c9c40e

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