Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f5b1a26a3fde03…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 01:41:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 002d2d5a24bb88c6177492964eb2bcc4 SHA-1: c8e3b62e38a9bdc5a04b2e9b389ba3d207749001 SHA-256: 32f5b1a26a3fde033836a8461c980f7b7d659920bfdb60106e792210526cbbbc
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to sites offering game cheats and free currency. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-link-game-hack, is directly referenced in the document body and likely serves as a malicious landing page. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm designed to attract users with lures like 'Coin Master Free Coins And Spins'.

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.tw/app/406889139/coin-master-free-coins-and-spins-link-game-hack
    • https://www.simplenepaltravel.com/userfiles/files/free-minecraft-account_GM479516143.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-tool-no-survey_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/latest-coin-master-free-spins-link_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/roblox-for-free-eee-pc_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-link-hack_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/how-to-hack-people-on-roblox-2021_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/iro-free-robux_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/cheat-roblox-lumber-tycoon-2-jump_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-roblox-generator-from-jake-paul_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-spins-and-coins-com_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/guide--coin-master-free-tips_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-hack-download_GM479516143.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-just-click_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-rewards_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/roblox-mad-paintball-hack-2021_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-club_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033fc.bin
75bc1407c646da0d3361eea20de5d22fd4f7632944ae8bf7a2d1383d5edd3168
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33FC 22636 bytes
font_01_sfnt_off00006682.bin
4a00b74065c845a8261d6cc4e101dd5c2a388e973e7fc9ab28e7679a34d9d18b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6682 18520 bytes