Malicious PDF — malware analysis report

Static analysis result for SHA-256 6369bea857551428…

MALICIOUS

PDF

41.6 KB Created: 2021-05-16 01:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 54428cbb77c595479f39a0298ad229fc SHA-1: 5415fd42686c0931f4e2dfb2c65efead136d1182 SHA-256: 6369bea8575514284c9ddec41e36246b1f2c2a977beefd05dcf069054cd6677d
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a heuristic firing for a remote support lure, suggesting an attempt to trick the user into downloading or installing malicious software. The document body, though heavily obfuscated, contains references to "hacks" and URLs pointing to game-related cheats, reinforcing the lure. The ML classifier also strongly flagged this PDF as malicious.

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/cool-minecraft-hacks-game-hack PDF link annotation
    • http://dana1157.com/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004971.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4971 24520 bytes
SHA-256: dc0793f22581125ab743b08404bec3a8b1f55d9eca2623aa0b87168e5100bc24
font_01_sfnt_off00008164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8164 17956 bytes
SHA-256: 052a8056d5e76bd054e8f6de415126dc7fc526d2c477c3dbde74b8be28c4271b

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