Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01b537b0ecf656a…

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 19:38:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c6181ae63ef9b7e55c2023f4d6ececaa SHA-1: 5f4395293b2bf87c08cc80175d21e5d3f3c60a00 SHA-256: b01b537b0ecf656a8a0724e6037b555183aa5a489282bfa9ec6e219a76490a21
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with a malicious link. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-email-free-spins-game-hack, likely leads to a second-stage payload download. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-email-free-spins-game-hack
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/www-bandicam-com-free-robux_GM431946152.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-windows-10_GM479516143.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/minecraft-free-version-pc_GM479516143.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/cm-spin-link_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/roblox-rules_GM431946152.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/roblox-18_GM431946152.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/free-spin-coin-master-new-link_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-hair_GM431946152.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/robuxmatchcom-free-robux_GM431946152.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/free-spin-and-win-coin-master_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/fb-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsalyusra.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d3c.bin
76f4c1af74931c58dced7150dcfe8539c45b8840bf2098926939887e9e84eb69		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D3C 24396 bytes
font_01_sfnt_off000084e4.bin
6abc40c27418d042928f00883f7f6ae445038055fc973b4cc9155520e44fc93a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E4 18220 bytes

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