Malicious PDF — malware analysis report

Static analysis result for SHA-256 353125b521734ba6…

MALICIOUS

PDF

44.2 KB Created: 2021-05-11 04:08:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 29300984fa8a6baeded72fa0ff438ef2 SHA-1: a1fea328b34b48bd50e0e6634c84e83e231b2a0a SHA-256: 353125b521734ba6469092ad537a826b3a654c2e2f39f70d08bd9771a890bba0
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA lure to deceive users into interacting with a malicious link. This link, 'https://netcdn.xyz/app/406889139/free-coins-coin-master-hack-game-hack', likely leads to the download of a secondary payload. The presence of numerous similar URLs within the document further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/free-coins-coin-master-hack-game-hack
    • http://repository.ummy.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/roblox-hack-me_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/rbx-roblox-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-free-robux-website_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/earn-free-spins-coin-master_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/roblox-hack-scripts-pastebin_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/coin-master-2021-free-spins-link-today_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/who-to-get-free-robux_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/free-coin-master-coins_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/coin-master-2021_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/free-robux-no-verification-needed_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/free-robux-app_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-robux-easy_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://repository.ummy.ac.id//repository/coin-master-attack-madness-hack_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/coin-master-hack-ios_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/como-hackear-coin-master-espaol_GM406889139.pdf
    • http://repository.ummy.ac.id//repository/roblox-free-clothes-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492c.bin
97462d16d809103231fbb8a50ada66ed029a2f9999ff5547352a5ffccc14b748		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492C 24900 bytes
font_01_sfnt_off0000818c.bin
d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855		 pdf-font-stream PDF embedded font (sfnt) at offset 0x818C 2868 bytes
font_02_sfnt_off00008b76.bin
d4b290fbe96f806a63e53895600235ad07ee700a50234ed47d5e5eeda0b1e0de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B76 17880 bytes

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