Malicious PDF — malware analysis report

Static analysis result for SHA-256 353bf31bc4d0e4e2…

MALICIOUS

PDF

228.1 KB Created: 2021-07-06 10:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ea489b515cbcdba33bfe51ea713505e0 SHA-1: 9f39af541966a346b184c7545498acad1eb7c0c9 SHA-256: 353bf31bc4d0e4e23e668986f6a65e6d6bb5d2a6760b5eb3f6bf8ae26ea8004a
132 Risk Score

Malware Insights

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

The sample presents a fake CAPTCHA and a download lure, common social engineering tactics to trick users into downloading malicious content. The embedded URL points to a site offering game hacks, further supporting the lure. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious download site, likely involving JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 6

  • 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 http://netcdn.tw/app/1094591345/pokemon-go-x-free-download-game-hack
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-roebucks-without-verification_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdf
    • http://pustaka.stikesperintis.ac.id/repository/roblox-invincibility-cheat_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/roblox-free-rubox_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/minecraft-free-unblocked_GM479516143.pdf
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-spins-hack-iphone_GM406889139.pdf
    • http://pustaka.stikesperintis.ac.id/repository/hack-coin-master-1_GM406889139.pdf
    • http://pustaka.stikesperintis.ac.id/repository/how-you-get-free-robux_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://pustaka.stikesperintis.ac.id/repository/hack-zombi-rush-roblox_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/roblox-svg-free_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-pet-food_GM406889139.pdf
    • http://pustaka.stikesperintis.ac.id/repository/free-coins-2021-coin-master-link_GM406889139.pdf
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-coins-link-2021-today_GM406889139.pdf
    • http://pustaka.stikesperintis.ac.id/repository/how-to-hack-to-get-a-password-on-roblox-account_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/game-cheat-central-how-to-get-free-robux_GM431946152.pdf
    • http://pustaka.stikesperintis.ac.id/repository/free-fire-tik-tok-2021_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off0003235f.bin
0e5f3d4d9c4bb9979f7b1ba011d58b07cf0f34dca8e06a97197ec27070ff92be		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3235F 25576 bytes
font_01_sfnt_off00035f59.bin
edea2e863d1ad253faa14d4f1469bf40c0b84969210374770b0ae2cbbcfd2d73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35F59 19164 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.