Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f6c19b074d441a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 23:46:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e422215909cdfca100bdf862a0eb3fc7 SHA-1: 8418990e0c12de3e887979edbd3935c411baf3d7 SHA-256: 43f6c19b074d441a76a6dcf2fb1259b7fa0eaf917b4dac0d1f17103531bade21
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a link farm, heavily suggesting a phishing or scam attempt. The document body and extracted URLs focus on 'free spins', 'coins', and 'hacks' for games like Coin Master and Roblox, indicating a lure to malicious websites. The ML classifier also flagged this PDF as malicious with high confidence.

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.tw/app/406889139/200-free-spins-coin-master-game-hack
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-roblox-money-hack_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-pinewood-core-op-weapons-free_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-hack_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-make-decals-free-on-roblox_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/hack-roblox-items_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-hack-robux-items-for-free_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-codes-download-2021_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/minecraft-pe-server-hosting-free_GM479516143.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-exe_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-lumber-tycoon-2-with-cheat-engine_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-village-4_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-saob-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031af.bin
e5a82e87aa7c527b5a5bb7c35a554418bded6b852fd2a6ff159087707b6fd88d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31AF 22772 bytes
font_01_sfnt_off000064a6.bin
9bbada0425f487f3c4a68143d9c445a4c5f68259678acbb3e596bfcd884a6068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A6 18472 bytes

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