Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3d0af5a11e8a32…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 06:51:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 06b436a35b05749b46dd09046061dc3f SHA-1: af85c3e3a22e8c78d69b426ccd2f52cc1ab8858e SHA-256: 6a3d0af5a11e8a322b837a36b4020bd1de0c320511d429aa02c5d2e0c4afc0ec
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/games-like-coin-master-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-your-hacked-roblox-account-back-with-coding_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-free-exploit-may-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/como-hackear-robux-en-roblox-facil-y-rapido_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-no-hack-or-glitch_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/hack-roblox-account-com-3_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-free-builders-club-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-free-games-login_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-generator-no-scams-no-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-roblox-app-for-android_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_002_off0000343e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343E 22896 bytes
SHA-256: d2d7bf2076a8dfa5ee298bfe2c709f2fb0374469e021941acf87b7eff74ff357
font_01_sfnt_off0000679b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 18264 bytes
SHA-256: 7d1498385015156658f2c4797ed1f9ef5355b2a3c7c805ee34a2c4c44564bfa8

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