Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c296ab2d5ad01ae…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 19:48:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b6e3b117c898f8d3e70f04f758c9dcd0 SHA-1: 21ed2cf95b03976cba167616b0bc48b6139b342a SHA-256: 3c296ab2d5ad01ae97751d6f5d653a585b7d09fad0ff17655a95849b6792eb0f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/rainbow-antlerts-free-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-inspect-element_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pastebin-com-hack-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/tai-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-with-dll-injector_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-verification-needed_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
font_00_sfnt_off00002de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE0 21912 bytes
SHA-256: fc451d1be933798668d8cd703c3aeef65cace5641945dade0eac0d47b1a68e26
font_01_sfnt_off00005e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E13 19036 bytes
SHA-256: 407b52607e0ee0b32434d4c5b8ebfe696e5f64f31d253daeb098c93e860de6bc

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