Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4d08bd5c03ab8d…

MALICIOUS

PDF

33.2 KB Created: 2021-06-27 13:58:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 796b3ce591d0d62979e653002ed2ee81 SHA-1: abc5eebdf7853e6ba2bf242d8ea91d52448cfc91 SHA-256: 7b4d08bd5c03ab8de9baa377a9ff85aeeaafd080a6547265f0ff31a2f2748e42
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 0.9824

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.co/app/431946152/roblox-cheats-2021-game-hack PDF link annotation
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/roblox-cheat-table_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/roblox-dinosaur-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/pubg-uc_GM1330123889.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/meepcity-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/can-you-get-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.5oceansoman.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.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_off00002c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6B 21824 bytes
SHA-256: 6b98cff9b37ed26169a6d91891c2d3c281496fa7ff42fc5fb4ec7ea24809645f
font_01_sfnt_off00005ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA6 19160 bytes
SHA-256: 9619885ab84b8f76d35dc50460558ff2b12d0b00d50949f5bab89ab68d09fbc2

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