Malicious PDF — malware analysis report

Static analysis result for SHA-256 a438f754905ee2ef…

MALICIOUS

PDF

40.9 KB Created: 2021-05-16 06:08:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cc0f2964c78f1358c09a172b5ee2b49e SHA-1: 78325dde320bf95a253afd4183f2bb559a175baa SHA-256: a438f754905ee2ef8d110185beb61586a1a286219a1a019819efda536b9558de
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, a common social engineering tactic to trick users into executing malicious actions. It also embeds multiple URLs that likely lead to malware downloads. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/hack-coin-master-app-ios-game-hack
    • http://dejipkesbelt.nl/images/coin-master-hack-355_GM406889139.pdf
    • http://dejipkesbelt.nl/images/classic-minecraft-net-hacks_GM479516143.pdf
    • http://dejipkesbelt.nl/images/free-minecraft-account_GM479516143.pdf
    • http://dejipkesbelt.nl/images/coin-master-hack-apk-facebook-login_GM406889139.pdf
    • http://dejipkesbelt.nl/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • http://dejipkesbelt.nl/images/free-robux-easy-and-fast_GM431946152.pdf
    • http://dejipkesbelt.nl/images/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://dejipkesbelt.nl/images/coin-master-hack-download-apk_GM406889139.pdf
    • http://dejipkesbelt.nl/images/getrobux-ninja_GM431946152.pdf
    • http://dejipkesbelt.nl/images/coin-master-download-hack_GM406889139.pdf
    • http://dejipkesbelt.nl/images/free-roblox-accounts-generator_GM431946152.pdf
    • http://dejipkesbelt.nl/images/microsoft-roblox_GM431946152.pdf
    • http://dejipkesbelt.nl/images/coin-master-hacks_GM406889139.pdf
    • http://dejipkesbelt.nl/images/coin-master-free-chip_GM406889139.pdf
    • http://dejipkesbelt.nl/images/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://dejipkesbelt.nl/images/coin-master-new-cards-hack_GM406889139.pdf
    • http://dejipkesbelt.nl/images/best-minecraft-hacked-client-2021_GM479516143.pdf
    • http://dejipkesbelt.nl/images/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://dejipkesbelt.nl/images/coin-master-hack-tool-v1-9_GM406889139.pdf
    • http://dejipkesbelt.nl/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046e9.bin
455857014ea8f944d990f49d610c6fee100d270a8885bfd38b316efe84fd9cbf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46E9 24240 bytes
font_01_sfnt_off00007e63.bin
db4cb0e5038e40aae5db0274b23e1c53a74243cd1ac5b16be32cf562ede0c44a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E63 17892 bytes

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