Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9ab1540f6c4b36…

MALICIOUS

PDF

43.8 KB Created: 2021-05-15 00:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4a2468292c22ac2d605c789d6eac141b SHA-1: d231634d5d1ccd86825fe2dbdc3b10f40bf56097 SHA-256: ee9ab1540f6c4b36ded4b4eeb9ef00c90afcfa50a5ba9ddf5ce59a69e11d8d29
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The sample is a PDF document that contains a fake CAPTCHA or human verification prompt, likely to trick the user into downloading a secondary payload. The document body and embedded links point to resources related to game hacks and free spins, suggesting a lure for potentially unwanted applications or malware. The ML classifier also flagged this PDF as malicious with high confidence.

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-free-coins-game-hack PDF link annotation
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://elearning.mantemanggung.sch.id/__statics/gudangsoal/files/is-minecraft-java-free_GM479516143.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_off00004c06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C06 29048 bytes
SHA-256: 8888b714bc08e0f3b1d8617050831563d27fbedba1f80c72abcc41d3427ac82e
font_01_sfnt_off0000899b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899B 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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