Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87be4664d9eaf8e…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 17:29:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 440c57bed2a08809bf2910aa8617a910 SHA-1: 0e127acac9d6430dc211f62add288d0cea7b326b SHA-256: d87be4664d9eaf8ef1db29e577d1c4d5e44848e745b6db0e4b52c45d6696781d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary redirector URL is https://netcdn.xyz/app/406889139/moonactive-coin-master-free-spins-link-game-hack. This indicates a phishing or scam attempt designed to lure users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded links strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/moonactive-coin-master-free-spins-link-game-hack In PDF document text
    • https://ceiprevellodetoro.org/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox-printables-free_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-without-downloading-apps_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_off00004ad0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD0 24908 bytes
SHA-256: c90024f9b5e0e8f4c19cbdacf8a595c535119cfffa460c857fb4bfc0a10eeae2
font_01_sfnt_off00008480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8480 18168 bytes
SHA-256: 5140a57a6990af64b86c6fc328de463115c3f290c56e1373822c3feaa5dc4a97

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