Malicious PDF — malware analysis report

Static analysis result for SHA-256 408ab2f9839e54d9…

MALICIOUS

PDF

43.4 KB Created: 2021-06-10 14:19:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a12e909104ce5c7dc8d2f077484b7228 SHA-1: 819eb1bd768c4cbb79629c0f3d8f3d198eb435d8 SHA-256: 408ab2f9839e54d92b7c244b9c72f15ec0194d2d62aa41c03388ac1b355f7f5a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a high-confidence heuristic identifying a lure related to game hacks and free generators. The primary malicious URL points to a site offering a 'minecraft-realms-free-trial-game-hack'. This suggests the document is designed to trick users into visiting a potentially malicious site by promising free in-game content. No scripts were extracted, limiting the analysis of further execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/479516143/minecraft-realms-free-trial-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/rbxcity-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-wings-in-catalog_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-gift-card-code-free-legit_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/dll-for-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-studio-library_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_004_off0000509f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509F 24712 bytes
SHA-256: 46a46dba3499fb892b4c5a81533951af43f5ff812d23ba7f9c3647881deb401e
font_01_sfnt_off0000886b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886B 17900 bytes
SHA-256: 5e9e7e4dd5050dedb25c4bef302629088f41d3cb5f82066cb4e6c0f6a9bca7dc

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