Malicious PDF — malware analysis report

Static analysis result for SHA-256 d095ff799e3a73c2…

MALICIOUS

PDF

36.3 KB Created: 2021-07-06 07:37:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c9c1676cf17037544751c289d554897c SHA-1: 9fdfcd5182dc2967d8353296b4dd986ac87c5470 SHA-256: d095ff799e3a73c263deecda04a65c5fab970942f74cea1412d1890b8eb2b004
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and cheats. The primary redirector URL is http://netcdn.tw/app/406889139/coin-master-free-spins-cheat-deutsch-game-hack. This indicates a likely attempt to funnel users to malicious sites for further exploitation or phishing. No scripts were extracted, but the presence of numerous embedded URLs strongly suggests a malicious intent to redirect users.

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/406889139/coin-master-free-spins-cheat-deutsch-game-hack In PDF document text
    • http://xenonsvjetla.com/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-video-cracked_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-on-roblox-2021-easy_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-generator_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/comment-hacker-sur-roblox-admin_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-rewards_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/take-me-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-money-in-ud-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-scam-on-roblox_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_off0000368d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x368D 22944 bytes
SHA-256: d614e5172d7c7e4898001da74dbdda8438a00723eb2fe4ff1ee26ed4c1ed7681
font_01_sfnt_off00006a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3B 18648 bytes
SHA-256: 0f75c991103dc95817f01e28baa51d3b59767776a8e5ec3aab022190e4357f66

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