Malicious PDF — malware analysis report

Static analysis result for SHA-256 530c200cab43fea3…

MALICIOUS

PDF

47.6 KB Created: 2021-05-12 00:30:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d2e75088b48570ee85590f6a2afb3407 SHA-1: 254fee7c99fe0bc83f7dc30f010a4e2774230ccb SHA-256: 530c200cab43fea3cf90b9e79d3f532b32ccacd2ad52177c67c9ca81253b9892
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are part of a link farm designed to appear as legitimate game cheat resources. The primary malicious URL, https://netcdn.xyz/app/431946152/free-robux-hacker-us-game-hack, is likely a landing page for a malicious download or exploit. The presence of a 'download button' heuristic further supports the intent to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/free-robux-hacker-us-game-hack
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-cheat-to-get-free-spins_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-generator-no-verification_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-time-speed-hack_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-java-minecraft-for-free_GM479516143.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-apk-hack-32_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-coin-master-card-free_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coin-master-app_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-club-hack_GM406889139.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdf
    • https://www.st-johns-stafford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f1a.bin
aa5df5340ba78f6221ee85b7083d999bfa83ee72fede013094400146875973e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F1A 25136 bytes
font_01_sfnt_off000089b8.bin
931c952924ffdf32ff42799d5452b629f70e8dcf544d3c77add2b94b39666c5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B8 3940 bytes
font_02_sfnt_off00009690.bin
be32b0f906764c1f2317decc7ac5a24a5975e1ace61028a3a9703984df87bb8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9690 18600 bytes

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