Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f275552e482fd7…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 17:09:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f55912aa04b229e09178716a524ecf90 SHA-1: 9d22545a4c7d0223a1a9a2e8a36c76bbf877774d SHA-256: 48f275552e482fd7d9d7a26151c9d45aa284a53c959fa8b4ada26cbf569c8c24
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 game hacks and free spins for Coin Master. The document body and heuristics indicate a lure designed to trick users into clicking these links. While no scripts were explicitly extracted, the nature of PDF redirection often involves JavaScript execution to facilitate the chain of malicious redirects.

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/coin-master-fan-page-free-spins-game-hack In PDF document text
    • https://globair.com.tw/image/data/files/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/link-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/robux_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-free-redeem-code_GM406889139.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_off00004a15.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A15 25868 bytes
SHA-256: 4f6bd4e0ec9da64470731991205904f9863a7d9d0f65fb707a807c5ec4427e34
font_01_sfnt_off00008433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8433 18328 bytes
SHA-256: d106028e9c816c4ed38d7f9dbfb4c1b42a2571be69ef627f7b4a635c4c6a8b94

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