Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee026ec3eb1efae4…

MALICIOUS

PDF

34.9 KB Created: 2021-06-24 19:56:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 56d4366fa69706340b4b9e281329ffff SHA-1: 0dc22179af02e1ac410f37fe38ad9ccf734bc33a SHA-256: ee026ec3eb1efae4c77d02fe94d652f2a977df3c7399a2ebb6c0398af14c75a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and text related to obtaining free spins and currency for games like Coin Master and Roblox, indicating a scam or phishing attempt. The presence of an external URI and a high ML classification score suggest malicious intent. The document body and heuristics point towards a lure to click on provided links, likely to a site that hosts further malicious content or attempts to trick the user.

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/406889139/how-to-get-daily-free-spins-on-coin-master-game-hack
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/instagram-free-coin-master-spins_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-printable-roblox-images_GM431946152.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-chest-in-coin-master_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-help-free-robux_GM431946152.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-pc-download_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-xray-hack_GM479516143.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-minecraft-java-code_GM479516143.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-2021-today_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-do-you-earn-robux-on-roblox_GM431946152.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-2021-app-download_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-hack-free-robux_GM431946152.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-iphone_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-spin-link-today_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spins-coin-master-no-survey_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-game_GM406889139.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-use-wurst_GM479516143.pdf
    • https://www.st-peters-alton.staffs.sch.uk/admin/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003273.bin
77314b93c8e8e7aaf47b6ad121a41f85cbaf2397aa6de4c5edfb6d6ae9ba8f2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x3273 22424 bytes
font_01_sfnt_off0000644b.bin
0541843c892a4d1b9c7a7478581dd1fc71ab730f341aaa2a16b3a43281d629e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x644B 18760 bytes