Malicious PDF — malware analysis report

Static analysis result for SHA-256 227769b22fca0f7b…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 05:08:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8593e2694b267c5d12435b0234746c55 SHA-1: 7e79f5a703ad6307549cd014eec59772f01f8c7b SHA-256: 227769b22fca0f7b6ba86e09394dc659e5cd9a56845c684689dd526a70e86ac3
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are SEO-optimized and appear to be part of a link farm. The primary URL and document body suggest a lure for users seeking game hacks, likely leading to malicious content or phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-hack-someones-roblox-account-with-google-chrome-game-hack
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-coin-master-spins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/popular-roblox-games-for-free_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-cheat-in-fashion-frenzy-roblox_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-roblox-admin-script_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/clients-minecraft_GM479516143.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/roblox-free-catalog-items-with-tix_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/html-free-robux-30_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/gfx-maker-free-roblox_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-cheats-and-hacks_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ca8.bin
e5d07540b056f6419b6a1ab32acd50ebbcd31fb474c437023d0a2fbce42ff523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA8 22620 bytes
font_01_sfnt_off00005f34.bin
c44360c85fc1e8a2405917131f97371fb7e4748bc024cfd00f62c736801c9693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F34 19808 bytes

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