Malicious PDF — malware analysis report

Static analysis result for SHA-256 466aea470ebd0e0e…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 05:16:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5ced430ad5865397a94975f2bd08e8b3 SHA-1: 24196610319fd576cfa44b74d82a32e05b65fa58 SHA-256: 466aea470ebd0e0e424229f3222e3baa5207ba47327e5b0eea6515cbd338d535
102 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 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/cheat-roblox-2021-game-hack PDF link annotation
    • http://122.201.26.170/files/editor/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfPDF link annotation
    • http://122.201.26.170/files/editor/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/free-roblox-harley-quinn_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/how-to-get-free-robux-2021-hack-no-subscribing_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/roblox-infinite-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/vehicle-simulator-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://122.201.26.170/files/editor/files/best-free-spin-app-for-coin-master_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_off00002ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED2 22216 bytes
SHA-256: 8d97d5db11615677a1546f23cb3823676c432aac373654e99ce4193bdf10ab47
font_01_sfnt_off00006047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6047 19160 bytes
SHA-256: cb4e93772a2802cdf898a2692d8633540257621725959ffc1addeeed88cc6d7c