Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a402a96fd77efda…

MALICIOUS

PDF

36.8 KB Created: 2021-07-04 16:40:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 056d05ee87eb2b179003e59a52546fe5 SHA-1: d264f2a2ea2d81e89de05d34f078f99b9efb410c SHA-256: 1a402a96fd77efdaa39d85392dc37c0af59cfc7a221ceef798a50d008acd2e35
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a heuristic firing for a game hack redirect lure, indicating a social engineering attempt to trick users into visiting malicious sites. The document body and extracted URLs strongly suggest a lure related to game cheats and virtual currency, likely leading to phishing or malware download pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-hack-without-human-verification-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-for-playing-games_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-your-robux-back-after-being-hacked_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-download-free-windows-vista_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/schoto-roblox-free-shop-hair_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/using-cheat-engine-on-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hack-that-thing-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hunter-x-hunter-lvl-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hack-pacht_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
font_00_sfnt_off000037a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A5 22924 bytes
SHA-256: 5e7f06d2a5eef57472b3a9e5e39464ac9dfeb4b07058f1969c3fc674daaa8c3f
font_01_sfnt_off00006ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD1 19244 bytes
SHA-256: 30c6eda7860abcbe2539b7325d9fcd8b1a95fd07748c36c511e8089874e2a7d7

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