Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd7425e3f8cb269…

MALICIOUS

PDF

47.8 KB Created: 2021-06-04 03:22:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 81d4d4c80d8e9a46867ebcffa8cbcce7 SHA-1: 2986c109b28b927426d4123780fe6f5e83e467d6 SHA-256: ffd7425e3f8cb269a489bf24719fe5a8bad8d3b92aeac87e36bd148eb1de6305
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one prominently advertised as a 'free generator / game hack' for Minecraft. This lure, combined with the ML classifier's high confidence, suggests the document is designed to trick users into visiting malicious websites, likely for credential harvesting or malware delivery. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-hacks-wurst-game-hack PDF link annotation
    • https://lib.unitri.ac.id//repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/www-robux-us_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53D6 25464 bytes
SHA-256: 08f571c64b014f9e0bae39cd5ec36caac931cb7854480a23dda83b5bd54b7c8f
font_01_sfnt_off00008e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E40 3092 bytes
SHA-256: 1aa0e4457f2fdbd20c643bc065edafaa683fd9dc2930c01c4492bce0fd9a7f02
font_02_sfnt_off000098ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98EC 18076 bytes
SHA-256: 3e7497e6bc4bf84e5186ee2c608eda5b15e7e8e7c6854cdd6eb66a0ec10d8832

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