Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af230811d0ab250…

MALICIOUS

PDF

28.8 KB Created: 2021-05-10 19:34:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 47d22e0d151667d1bead7573c417cd5e SHA-1: 47f9d050d832782944d4e8bdbf6814e68c3bccee SHA-256: 2af230811d0ab2501453bf64c080b03650bcccfc8a7657c381b12229215672f6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and embedded text that lure users with promises of free Robux and game hacks. These links, including one pointing to an IP address, likely lead to malicious sites designed to distribute malware or phish for credentials. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9774

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 https://netcdn.xyz/app/431946152/free-robux-without-human-verification-real-game-hack PDF link annotation
    • http://118.98.227.172/opac/repository/roblox-hack-app_GM431946152.pdfPDF link annotation
    • http://118.98.227.172/opac/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-android-no-root_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_off0000217d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x217D 19664 bytes
SHA-256: 8bfc63179501f06a191219a3eeb0659455f6c217434f60a580629cd7bf137496
font_01_sfnt_off00004afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFE 19296 bytes
SHA-256: fcd37aae12381262441149b3f055c838aea0a99c045645b338d4096dcdd54a9c

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