Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a200b785035f7fa…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 00:32:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b82107927d8a56548021e16a0c040cd SHA-1: ae768d1ad28216e142df22ae59a86f1895a5164e SHA-256: 4a200b785035f7fa097d0fb6cc6e94a85818efd2f62b32fdc897297cc60fe9de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary malicious link identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-codes-game-hack. The document's structure and embedded links strongly suggest it is designed to lead users to potentially harmful websites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/how-to-get-free-robux-codes-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com//repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/get-me-robux-for-free_GM431946152.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_off00004ae1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE1 26312 bytes
SHA-256: dce8c4e4aa505e692776ca5c9788a9d296115a8cd6c35b84725a7908af8e2cbc
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 18456 bytes
SHA-256: 647704a1f8ac96c456e26df3796ee2ada4959e42324ca69004a5f2968b1e2bf7

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