Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f1e65ba4fa8e9c…

MALICIOUS

PDF

45.3 KB Created: 2021-06-01 10:00:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 20ca3bc50b68bc3c0f2c2d28b228b5cf SHA-1: a6e8b61b74e352e515176426231441433964c130 SHA-256: 66f1e65ba4fa8e9c79a7241b02b9afa6e69123315065974b7cf672c8beaefd9e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/free-robux-2021-october-game-hack PDF link annotation
    • https://ozkara.be/wp-content/uploads/fsqm-files/roblox-base-wars-free-admin_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/roblox-bone-break-cheat-engine_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/roblox-robux-hack-february-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-get-clohes-for-free-o-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/cheat-engine-roblox-speedhacks_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/free-robux-games-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-make-a-roblox-scam-website-free_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/ww-roblox-cheat-us_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/hack-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/alfheim-online-free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://ozkara.be/wp-content/uploads/fsqm-files/how-to-hack-roblox-build-a-boat-for-treasure_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_off00005179.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5179 25780 bytes
SHA-256: 673e3efe14f3766795b94d1c3084148c32abe1c7b3e6c6af0962e01d75ab136f
font_01_sfnt_off00008d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D92 18520 bytes
SHA-256: a951299beec4402d7aba0951b4250c15ebb97c7a72bfa5daa9e30bb202b227b2

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