Malicious PDF — malware analysis report

Static analysis result for SHA-256 47994dde36037063…

MALICIOUS

PDF

48.2 KB Created: 2021-05-16 23:41:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 369fdfc50ee4cdba01d733a67a98215c SHA-1: da14785849879aead072d00383d7af21c65d3881 SHA-256: 47994dde360370634db6bfbb9b1b8ca55eca3e3b163185400126750f395e3648
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are to benign educational sites but one suspicious URL is present. The ML classifier flagged this PDF as malicious with high confidence. The document body and embedded links suggest a lure for game cheats and virtual currency, consistent with phishing or scamming operations.

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/406889139/coin-master-links-2021-game-hack
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-daily-spin-link-app_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-coin-master-spins-2021-link_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/roblox-generator-no-verification_GM431946152.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-2021_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/hack-coin-master-app-ios_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/earn-roblox_GM431946152.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-fire-coin-master_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/android-coin-master-hack_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/the-coin-master-hack_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-glitch_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
    • https://www.lakenheath.suffolk.sch.uk/admin/ckfinder/userfiles/files/game-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004eca.bin
c4f92cf33d3ccd60f4338183ed4fbbb2ab4ee69cf128e5b1d12fb087b6d4b67f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECA 24180 bytes
font_01_sfnt_off000085cf.bin
e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85CF 8676 bytes
font_02_sfnt_off00009a59.bin
6c2a50199d9b46215a875dc9668b69110360059bd5b64fd0f73058dd3f4c0f4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A59 18116 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.