Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff9c37a3a6b9476…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 18:10:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 65cc702eb9be32780339e55ff2a2d648 SHA-1: 5c612326cbf65eecb0169175ac9eb820ef701286 SHA-256: 5ff9c37a3a6b947640bdcfe7d815069844997c28df353421855bf07a7fa86930
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.tw/app/835599320/free-tiktok-accounts-with-followers-game-hack. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/835599320/free-tiktok-accounts-with-followers-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-roblox-with-cheat-engine-561_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/dayz-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/take-a-quize-for-free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/do-you-get-ip-banned-in-roblox-if-you-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/stickmasterluke-free-robux-obby-link_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hack-all-game-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-tool-v1-9_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_off0000301b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301B 22480 bytes
SHA-256: 52c113306da2464f7ba6e7673fdb9687941342646354af2d6a322e243afa9527
font_01_sfnt_off00006261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6261 18716 bytes
SHA-256: 6a9e38658570997ed650d3a9da312102177994b9210c10fc3e58eb65253864b9

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