Malicious PDF — malware analysis report

Static analysis result for SHA-256 35295f4d6d28edfe…

MALICIOUS

PDF

227.1 KB Created: 2021-07-06 16:47:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4d977cd502313928d32579aefef55b92 SHA-1: 0288bf81d4cb98182dc5953c60dbe4bc2fadbac7 SHA-256: 35295f4d6d28edfef10759359dff3d5bfa3870c9818b11379ba5d102dcc82421
132 Risk Score

Malware Insights

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

The PDF document contains lures for a fake CAPTCHA and a browser extension installation, aiming to trick the user into downloading a malicious application. The embedded URL points to a 'pokemon-go-free-coins-apk-game-hack', reinforcing the social engineering theme. The document's content and heuristics strongly suggest a phishing or malware distribution attempt.

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-free-coins-apk-game-hack
    • http://web.smkn1indramayu.sch.id/e-lib/repository/roblox-g_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/coin-master-links-free-spins_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/minecraft-complete-handbook_GM479516143.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-scam-game-uncopylocked_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/sondage-for-free-robux_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/play-roblox-for-free-on-google_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-script-executor-roblox_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/is-roblox-studio-free_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/inappropriate-roblox-games_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-co_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/freespincoin-masterlinkdownload_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-free-download_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-robux-generator-exe_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-hack-roblox-2021_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/custom-admin-roblox-hack_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/how-to-change-your-name-in-roblox-for-free-2021_GM431946152.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/free-spins-from-coin-master_GM406889139.pdf
    • http://web.smkn1indramayu.sch.id/e-lib/repository/is-minecraft-free-on-xbox-one_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off000320d7.bin
42166b050267b419f0bf75c83623d8ad0334aff77beba26c19aee74aa9cd1d0a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x320D7 25576 bytes
font_01_sfnt_off00035cd9.bin
fbbfa947006995f078e2a43ed3166e4285349e23d2838781e6dd0d7f3399ccd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35CD9 18656 bytes

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