Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bec4124cf7a1b99…

MALICIOUS

PDF

53.9 KB Created: 2021-05-12 17:31:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 468f984891c59ec41d481d1b77136fce SHA-1: 043c22c097106420c0dcfc1366df40d754dcd0bc SHA-256: 8bec4124cf7a1b99db69fe72baa5d7b70a033a24abca631b4899b387ff105576
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to trick the user into clicking a link, which is a common social engineering tactic. The embedded URL, https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-tablet-game-hack, likely leads to a payload download. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8795

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/how-to-get-minecraft-for-free-on-tablet-game-hack
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/tower-of-hell-roblox-hack_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/master-hack-coin_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/coin-master-level-4_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-5-10-2021_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/roblox-free-executor_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/free-roblox-characters_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/free-robux-app-real_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/minecraft-survival-free_GM479516143.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/free-coin-master-cards-link_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021-download_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/coin-master-apk-mod-free-download_GM406889139.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdf
    • https://elearning.mtsn7madiun.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-code_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e4a.bin
5032c536c2b3552216aad72293cdb8a91a0b0bd3ebbe8267d18bdafe663e0163		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E4A 25756 bytes
font_01_sfnt_off0000895d.bin
218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x895D 7936 bytes
font_02_sfnt_off0000a287.bin
ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA287 4232 bytes
font_03_sfnt_off0000b114.bin
355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB114 18104 bytes

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