Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fef5d1716ceb39c…

MALICIOUS

PDF

41.1 KB Created: 2021-05-14 07:11:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3c43c6738dfb89169a5db4f7178e96af SHA-1: bf65291461bbc17c218f4ebc3ea8490b9f993495 SHA-256: 9fef5d1716ceb39cdd43c2a1ec1dbf1b21d19c0c7fc667dcf73c4fc2216a8c45
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a heuristic firing for an external URI, all pointing to potentially malicious download sites. The presence of a remote support tool lure, combined with the overall malicious classification, suggests an attempt to trick the user into downloading and executing a payload, possibly for remote access or further infection. The document body, though heavily obfuscated, contains references to downloads and a URL that aligns with the heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/minecraft-client-download-game-hack
    • http://viemeo.fr/images/roblox-piano-hack_GM431946152.pdf
    • http://viemeo.fr/images/free-robux-rewards_GM431946152.pdf
    • http://viemeo.fr/images/coin-master-free-coins_GM406889139.pdf
    • http://viemeo.fr/images/how-to-get-free-robux-website_GM431946152.pdf
    • http://viemeo.fr/images/coin-master-hack-generator-tool_GM406889139.pdf
    • http://viemeo.fr/images/free-roblox-accessories_GM431946152.pdf
    • http://viemeo.fr/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdf
    • http://viemeo.fr/images/robuxmatch-com-free-robux_GM431946152.pdf
    • http://viemeo.fr/images/coin-master-free-spins-link-today_GM406889139.pdf
    • http://viemeo.fr/images/get-me-free-robux_GM431946152.pdf
    • http://viemeo.fr/images/minecraft-ore-finder-mod_GM479516143.pdf
    • http://viemeo.fr/images/how-to-make-free-robux_GM431946152.pdf
    • http://viemeo.fr/images/roblox-hackprogamers-com_GM431946152.pdf
    • http://viemeo.fr/images/how-to-win-free-robux_GM431946152.pdf
    • http://viemeo.fr/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://viemeo.fr/images/minecraft-115-2-hacks_GM479516143.pdf
    • http://viemeo.fr/images/free-roblox-hack-us_GM431946152.pdf
    • http://viemeo.fr/images/free-robux-cards_GM431946152.pdf
    • http://viemeo.fr/images/free-robux-hack-no-verification_GM431946152.pdf
    • http://viemeo.fr/images/is-minecraft-free-on-xbox-one_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047b5.bin
7fde0edfe84868cc6ed1a4eee8e11f0840546750dcfaa7545f1d0e87da878e97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47B5 24324 bytes
font_01_sfnt_off00007e52.bin
df528b26126d4fc11b7eeaa3b1f911f76ffca14ff52ae065bc56290066d0d251		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E52 18292 bytes

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