Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9215984759e1ca…

MALICIOUS

PDF

43.8 KB Created: 2021-05-11 23:34:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4f8fe4db93bc0be7d0e2206490d1c9d0 SHA-1: aadbaf2e6fe37ed774073efaf96c204cfc6c091a SHA-256: 1d9215984759e1ca6b519ad2820411289664346277b7bf076d6ea0be489587b7
82 Risk Score

Malware Insights

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

The document's content and heuristics indicate a social engineering lure, presenting a fake CAPTCHA to deceive the user into interacting with a malicious URL. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-app-game-hack, which is likely intended to deliver a payload or lead to a scam. No scripts were extracted from this sample, but the PDF structure and embedded URI strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-spins-and-coins-app-game-hack
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/roblox-generator-com_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/prison-life-roblox-hacks_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-game-download_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-coin-spin_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-as-a-kid_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-tiradas-gratis_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-minecraft-alts_GM479516143.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/kachifpro_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/earn-robux-websites_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-minecraft-pe-server_GM479516143.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/real-hack-for-coin-master_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://elearning.man2pontianak.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d4c.bin
e109cb0c27cb223d7838236d1838aeec1be3c22048d6d2afeafbc0dafab49da4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4C 25796 bytes
font_01_sfnt_off000089b7.bin
7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B7 18060 bytes

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