Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2071e8478f0f6c…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 04:51:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 63cc2cd703bb2b67718b4f6cf6f23515 SHA-1: 975f57359d0f7ecff49c002b89eb33c6fa755644 SHA-256: 2a2071e8478f0f6c4573468e8c593b76c93a1912c314b136b62c5c2fb7a49c37
122 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure and links to a game hack generator, indicating a social engineering attempt to trick users into visiting a malicious URL. The primary URL, https://netcdn.online/app/431946152/is-roblox-free-on-nintendo-switch-game-hack, is likely the entry point for a further payload or phishing attempt. While no scripts were explicitly extracted, the PDF structure and heuristics suggest exploitation of client execution vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/is-roblox-free-on-nintendo-switch-game-hack PDF link annotation
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id//repository/minecraft-esp_GM479516143.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_off00005507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5507 24648 bytes
SHA-256: 2eb71c42bd39048ca94b7d50123b45352878dd576b02e1c785036a2148802bf1
font_01_sfnt_off00008cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD3 18676 bytes
SHA-256: 0355fc141c5901985405d6ccc218732ea46d01f7e960bb3eb1147f2b88eb9437

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