Malicious PDF — malware analysis report

Static analysis result for SHA-256 917d0ebfa0c5316c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 21:52:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 440a33e53a95215c32d462a3a6d01027 SHA-1: 8181f34c2f6c59ffb6c6fb8113135872de1c13c3 SHA-256: 917d0ebfa0c5316c8fa5a79ee77e7f2f2bcea35a32872ceb72ea625840b202e8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized to appear as legitimate resources for obtaining free in-game items or hacks. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document body itself contains text and URLs related to 'free Robux' and 'Minecraft hacks', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/get-free-robux-no-verify-game-hack
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-play-minecraft-for-free_GM479516143.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-gift-event_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/free-robux-apk_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-working-hack_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-hack-no-download_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/minecraft-svg-free_GM479516143.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/rare-free-links-to-coin-master_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/comment-hack-roblox-prison-life_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-admin_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/whats-the-best-free-roblox-exploit_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-minecraft-coins_GM479516143.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-spins-link-quora_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-admin-commands-hack-download_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-game-hunters-club_GM406889139.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-tickets-cheat_GM431946152.pdf
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000314f.bin
c9b00f800fefd8d0747249cfc62a9668137e9bd6436eba334827db165adf3a54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x314F 22424 bytes
font_01_sfnt_off0000638e.bin
79ac8fd62c2175c8aeef5a6f2779dd8a424cec552c8552a4027d4243279df771		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638E 19256 bytes

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