Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6a2add8bdf6889…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 09:27:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1f6333f9620682016ddb14e28f0039a2 SHA-1: fdd5b90801f0587be5499574be840921fb917168 SHA-256: 8c6a2add8bdf68897ddd6628d74bba3a55df5da676f790398ad1b494a58e0619
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/406889139/clean-master-free-coins-and-spins-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/free-server-creator-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-dominus-messor-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-a-roblox-account-with-inspect-element_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/tiktok-free-book-hack_GM835599320.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-ban_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-robux-maker-free_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/build-and-survive-sunbeam-free-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/shinobi-life-level-hack-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/can-i-download-minecraft-for-free_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_off00003576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3576 23084 bytes
SHA-256: a176e7e45b90b5606eaa8f56aee1cc733d3762001a3865dbcfcc8679625708b3
font_01_sfnt_off0000695c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695C 18424 bytes
SHA-256: 422edec60c9a60eea153bffbb034d541e181a6e8f3b8dab89cf23806ccd959ba

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