Malicious PDF — malware analysis report

Static analysis result for SHA-256 c502399d59cf498a…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 04:50:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eec731e0839f679c516418ecf147a1fb SHA-1: 5c76b9b75cd04e5261267ceabfba8ac322c9bb64 SHA-256: c502399d59cf498a2b1651777e005c7c2f16bf42690852739a2c67c3cbe2ed49
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, with a primary focus on luring users with 'game hack' and 'free spins' themes. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a deceptive intent, likely to redirect users to malicious websites or download unwanted software. While no scripts were explicitly extracted, the presence of embedded URIs and the overall theme suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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.
  • 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.xyz/app/406889139/coin-master-hack-spins-game-download-game-hack PDF link annotation
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-today_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-spin_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_off00004bfc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BFC 24900 bytes
SHA-256: 75365ee30ad00667d2e72897ac454c6a3a3da868a3edd19fccfc94dab5808f55
font_01_sfnt_off0000857f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857F 18732 bytes
SHA-256: 9b73d77c7ba2fdf59398755aeae20ef659fba843845855bd34c74c79d9b70242

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