Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0ae52545302a52…

MALICIOUS

PDF

41.7 KB Created: 2021-05-10 20:10:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a2f553fc145144fa24b374dc23bad6bf SHA-1: e1b1a353e8d37589bb05244c576aafcaad2e2fdc SHA-256: 6b0ae52545302a5215f62c655f0320d60af0483774b40d89d9f87e9e5eafd983
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a fake CAPTCHA lure to trick users into interacting with malicious links, specifically targeting game hack generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/how-do-i-get-free-coins-on-coin-master-game-hack. While no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to exploit user interaction, likely leading to a second-stage download or execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/how-do-i-get-free-coins-on-coin-master-game-hack PDF link annotation
    • http://repository.poliven.ac.id//repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004939.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4939 24804 bytes
SHA-256: a1d416207b37571c9599088616450f56a120ceefa1646ba170f05e7b3a25b9ae
font_01_sfnt_off00008139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8139 18044 bytes
SHA-256: b0174b7273dd3697a995ce39da4c1069e2dc5f33a377c5b822b1ade397e01d0c

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