Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e1e988ca17f25e…

MALICIOUS

PDF

41.8 KB Created: 2021-05-14 18:01:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5ae19df7b4a798e3cd601f09182bd607 SHA-1: 776d3696c7a5bcafda907301f9b052b9580179e2 SHA-256: 29e1e988ca17f25e27d6cd70c2e7aa14d2102be042d44bf8c12ea8fb6e92f9bd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links disguised as download opportunities for popular games, aiming to trick users into visiting malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and 'ML_NYX_PDF_MALICIOUS' strongly suggests malicious intent. The primary attack pattern involves social engineering through deceptive links, likely leading to malware download or phishing.

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/479516143/minecraft-cheats-pc-2021-game-hack
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/minecraft-114-4-download_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-2021_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/master-coin-free-spin-daily_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/get-free-robux-gg_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-coins-coin-master-hack_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/new-free-money-links-coin-master_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-free-spins-save_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/mc-update_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/wurst-18_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-email-rewards_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-to-get-free-roblox-premium_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-can-i-get-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-spins-generated-from-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ab6.bin
f91d6688c8e9027b4e17df24b8aa09f0bd7f8fa5c9d8cc0fd0e1e28ff42e8f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB6 24528 bytes
font_01_sfnt_off0000811a.bin
2d037195ba652ec1c948f4cf72bc757aedb522eec45588ee568a5b79e45c6912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x811A 18292 bytes

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