Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bdf975ca15f2e5b…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 14:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7a2aac5500cceb97f4c6657029f151d3 SHA-1: 09ad0278b33cc599ffb9a95c0e5bbf30ca2ada92 SHA-256: 2bdf975ca15f2e5b5e08f9ae56b80b8d7189156aca456154a43874956604c0d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary link identified is https://netcdn.online/app/406889139/free-coins-coin-master-daily-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or social engineering attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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 https://netcdn.online/app/406889139/free-coins-coin-master-daily-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-2021-spin-link-today_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A2 25088 bytes
SHA-256: d2c4f93993f30041c50a06d01bbf0f6f12695e3dcfc13f43361bd9f8898571dc
font_01_sfnt_off000089da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DA 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000093c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93C5 18132 bytes
SHA-256: 1e224f5f91abe618aa90885726d1546ed761136b94692ecd0d001fc6fdb96963

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