Malicious PDF — malware analysis report

Static analysis result for SHA-256 63362128057447d5…

MALICIOUS

PDF

41.3 KB Created: 2021-05-14 05:42:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c49c8058e1a260f923d4588ad2cb556c SHA-1: d02e6cc4272a540252f6be6097cfc17e63832e0d SHA-256: 63362128057447d5128f6b11223b2bd9adab53943196651bb7964be1462f0e0d
82 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious executable file, and heuristics indicate it attempts to lure the user into executing commands via the clipboard. The document body, though heavily obfuscated, contains URLs that suggest a lure for game-related cheats or hacks, likely to trick users into downloading malware. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/479516143/optifine-pe-game-hack
    • http://linde-erbach.de/images/coin-master-links-for-free-spins-2021_GM406889139.pdf
    • http://linde-erbach.de/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://linde-erbach.de/images/coin-master-hack-without-human-verification-india_GM406889139.pdf
    • http://linde-erbach.de/images/daily-free-spins-coin-master_GM406889139.pdf
    • http://linde-erbach.de/images/get-more-robux_GM431946152.pdf
    • http://linde-erbach.de/images/how-to-coin-master-hack_GM406889139.pdf
    • http://linde-erbach.de/images/twitter-coin-master-free-spins_GM406889139.pdf
    • http://linde-erbach.de/images/robux-free-com_GM431946152.pdf
    • http://linde-erbach.de/images/minecraft-free-no-virus_GM479516143.pdf
    • http://linde-erbach.de/images/robux-fun-hack_GM431946152.pdf
    • http://linde-erbach.de/images/how-to-get-free-robux-website_GM431946152.pdf
    • http://linde-erbach.de/images/coin-master-gold-cards-free-link_GM406889139.pdf
    • http://linde-erbach.de/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://linde-erbach.de/images/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdf
    • http://linde-erbach.de/images/coin-master-hack-mod-apk-2021-download_GM406889139.pdf
    • http://linde-erbach.de/images/coin-master-free-spins-link-2021-hack_GM406889139.pdf
    • http://linde-erbach.de/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdf
    • http://linde-erbach.de/images/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://linde-erbach.de/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://linde-erbach.de/images/free-coin-master-spins-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004862.bin
af6ce423e59b7922eb13f719aad5dd3d514f7f083c9caf20d6dfada8f3b9b82c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4862 24764 bytes
font_01_sfnt_off00008134.bin
5a469ca17a8c140357c1150986cbf8b325a348879e3a8ed2f5f73ca7af5c2fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8134 17672 bytes

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