Malicious PDF — malware analysis report

Static analysis result for SHA-256 86bb224927038e40…

MALICIOUS

PDF

35.7 KB Created: 2021-06-28 23:43:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0e1204862ac93aa573be5325e54224e0 SHA-1: e2d27eb4efb50066ed115f1a98703e1daa67498f SHA-256: 86bb224927038e403a3491fd0121c69620dac9929fbaf1439232d3459b748024
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising game hacks and free currency. The primary lure URL is http://netcdn.co/app/431946152/hck-free-robux-o-human-otifacation-game-hack. This pattern is indicative of a phishing or scam attempt designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/hck-free-robux-o-human-otifacation-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/adopte-me-hack-project-alpha-300-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-ban-people-on-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-how-to-get-40-robux-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-apk-download-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-no-survays_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/flame-gg-website-hack-not-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-2021-2-4_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-mobile-money-cheats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-no-survery-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-online-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-roblox-2021-june_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3357 22520 bytes
SHA-256: f82d37cd5ca3fb2d4a55809f05f1d2325f8ff3b1b8a1db19326ab89bdabe9d53
font_01_sfnt_off00006595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6595 19372 bytes
SHA-256: f0f49593f14720fb97f9101126761b7f55ae08c84a22d25491bdefbef09fd7ec

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