Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ea34e010b32a82…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 20:41:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fba6fea57739872fff396e78430338b6 SHA-1: 87a988cc25954c6fc6715590bd4ef4f6ac6c41a6 SHA-256: f3ea34e010b32a828c42b4a60ff0d2c167ead69116e1e18f8177eac64e524245
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 0.9980

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/431946152/how-to-use-scripts-in-roblox-hack-game-hack PDF link annotation
    • https://library.um-sorong.ac.id/repository/roblox-jailbreak-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-do-you-get-free-robux-on-tasks_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-free-girl-clothes_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/does-roblox-have-free-snakes_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-hack-2021-free_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-script-executor-free-download-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-roblox-accounts-2_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-gamepasses-using-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-package-webs_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.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_off00003080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3080 23004 bytes
SHA-256: e0762ae43bbfc70c4c7c6e78959c581b8cf503863fccb78885307498840748b1
font_01_sfnt_off000063f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 19220 bytes
SHA-256: a8bf9d06374e0db8ffccbebc60cb81def042f511a0a1c8beab4e32725b7b3d1b

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