Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e1441dcd169e1c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 02:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 783fb12f82482f73a490255853dc45e7 SHA-1: f056f50bf188cf9b95d964fd6efadfdc9b2310ac SHA-256: c0e1441dcd169e1c8351399d1510a1c8f0ec5ba05cbff6a93dce53d1c00cc91e
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages related to game hacks and free in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of such links, and the ML classifier strongly suggests maliciousness. The document body and extracted URLs suggest a lure for users seeking cheats or exploits, likely leading to malware download or phishing.

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/431946152/roblox-purple-shirt-free-game-hack
    • https://library.institutpendidikan.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/play-roblox-for-free-no-downloading_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-hack-without-survey_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-minecraft-survival-server_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-connection-lost-hack_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-tree-planting-simulator-hacks-pastebin_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-easy-no-human-verification-2021_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/roblox-promo-codes-2021-free-robux_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/scary-larry-roblox_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/red-boy-free-robux_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/worst-client_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-a-roblox-account-with-roblosecurity-cookie_GM431946152.pdf
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-gift-link-2021_GM406889139.pdf
    • https://library.institutpendidikan.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdf
    • https://library.institutpendidikan.ac.id/repository/free-robux-codes-no-verification-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003168.bin
c92c084c5c165a0da6af35e6d794c75baa7142bdd883eb42cb98f31333d28b93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3168 22380 bytes
font_01_sfnt_off0000632b.bin
32ad94d0a3dd333acca83389cf85c566975c9ff3ea0c5d73e7bc4dc82c72d816		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632B 19512 bytes

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