Malicious PDF — malware analysis report

Static analysis result for SHA-256 b980361fb5f8a10a…

MALICIOUS

PDF

43.0 KB Created: 2021-05-17 08:13:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5ed1604c2ec497ae3ec96920b5178e3e SHA-1: 61e4fe123911e9deaa55626c70536aeeebc9947b SHA-256: b980361fb5f8a10aaf9fc886ce52b21301c4f1e34180c5d169529cc7bb65be0f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which are SEO-optimized and point to game-related hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent. The primary goal appears to be directing users to download potentially harmful content or visit malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-lost-world-2021-game-hack
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-hack-coin-master-apple_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/toolbox-for-mcpe_GM479516143.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-get-free-chest-in-coin-master_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/daily-free-spin-and-coin_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/minecraft-pe-free-download_GM479516143.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/coin-master-exchange-40-free-spins_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/coin-master-hack-apk-link_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/coin-master-coins-hack_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/boost9-com-roblox-hack_GM431946152.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/minecraft-survival-free_GM479516143.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdf
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-hack-coin-master-with-root_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd9.bin
9a1d6c24a5f63cc22b778c35b6a13dbe442fc2162df9a0ae35c18636d0fa18a8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD9 25016 bytes
font_01_sfnt_off0000848e.bin
fe6e96bee4f2349a2275eb1baf9951ec67b0217a441ba60f2b7a82c0a0005a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848E 18564 bytes

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