Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c2197fecc4b67d…

MALICIOUS

PDF

41.9 KB Created: 2021-05-11 04:32:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 022039bc45f1427f80be182f1df5e6d3 SHA-1: 0ca10180da450ca16a7bfb5cb47ae4450ae413fa SHA-256: b7c2197fecc4b67dc23aefdd632153bc018bd50e19d7cd11adf2b0f7051ab8ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Roblox Install Free Game Hack' and embeds multiple links pointing to known malicious redirector infrastructure. The primary link redirects to 'https://netcdn.xyz/app/431946152/roblox-install-free-game-hack', which is associated with malicious activity. The presence of embedded URLs and the nature of the lure suggest an attempt to trick users into downloading potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-install-free-game-hack In PDF document text
    • http://safari-crimea.com/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-link-2021-download_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
stream_003_off000048b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B1 24672 bytes
SHA-256: 24db785572f1878d24816530ba7fca13d8108f203d6af75469179e67b545e6db
font_01_sfnt_off00008162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8162 18280 bytes
SHA-256: 3c3a3b9ea50be1288d4e90d28d6823d5d0e7fce454efe1523ba787caa6fa0fc3

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