Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f61b8413a8991ab…

MALICIOUS

PDF

44.3 KB Created: 2021-06-10 11:27:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 48cbaa1973ddc08fcfb13f0341e2415e SHA-1: 655bbcd8e2b915efb626c9745639f0eed6acb4ca SHA-256: 2f61b8413a8991ab40c3fec0c0fc5e8a208daf0d0abbb4f039157f9e4d8a307a
82 Risk Score

Malware Insights

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

The sample is a PDF document that presents a fake CAPTCHA or human verification prompt, luring the user to click a download link. The document body contains text related to 'Roblox 2.0 Download Free' and an embedded URL pointing to a potential game hack download. This suggests a social engineering tactic to trick users into downloading potentially malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-2.0-download-free-game-hack
    • http://e-library.dharmawangsa.ac.id/repository/adopt-me-roblox-hacks_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/hack-coin-master-xyz_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/buy-robux-free_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spins-links-2021_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-mobile_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-without-survey_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/androidp1com-hack-robux_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-obby-2021_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/impact-roblox-hacks_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-generator-free_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-codes-for-promo-roblox-2021_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-cards_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdf
    • http://e-library.dharmawangsa.ac.id/repository/master-coin-master-free-spin_GM406889139.pdf
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050b2.bin
42eab580196491376bb805f17d8969ab28faa5fdb81e7e34f47785d580cf239c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B2 24284 bytes
font_01_sfnt_off00008809.bin
b20b9cd1a17b7402f55b6d6acaf36d6f4e9b693599c086d30319a23ce6cd3f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8809 19044 bytes

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