Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87602243811e610…

MALICIOUS

PDF

35.1 KB Created: 2021-06-18 09:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b714b2926c46e8afd15a56bb5fe2687d SHA-1: d4283effa91d78eb08723b69f7e2d3a8408ae43f SHA-256: f87602243811e610f815a88748bf941f60f48423f4b8d3713b645b42282f9c80
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are presented as download opportunities for in-game currency or cheats for popular games. The heuristic firings indicate a PDF link farm and a high ML score for maliciousness. The document body and extracted URLs suggest a social engineering tactic to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/robux-free-roblox-2021-game-hack PDF link annotation
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-coding-online-course-free_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-rbx-points_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-on-ipad-air-2_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-no-offers-no-verification-no-surveys_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-roblox-accounts-with-no-robux_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/www-roblox-com-free-robux_GM431946152.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
font_00_sfnt_off0000314d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314D 22816 bytes
SHA-256: 4863eb11c6a613e984fcd08714674477ccede43fb035742bf1ab29f85b46fc12
font_01_sfnt_off00006447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6447 19004 bytes
SHA-256: ed0fb1188e799f61568cd7beddcc78a41615f1da447c4d7f8d50b0115ccb6581

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