Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8d5ad0dddfa76f…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 07:15:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6b1113dcf44829eb48babaa289fda10b SHA-1: e4eb21cf435bb9ac66ff9ad166278ee674937f3b SHA-256: ce8d5ad0dddfa76fc0eada38349562f4f2965f31c8546f8f98dc15c1158d0b7b
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and links to known malicious redirector infrastructure, specifically advertising "game hacks" and "free generators" for popular games. The primary link, https://netcdn.online/app/431946152/roblox-hack-site-game-hack, is identified as a malicious redirector. The document body also contains obfuscated text and URLs pointing to similar lure content, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.online/app/431946152/roblox-hack-site-game-hack In PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-tiktok-accounts_GM835599320.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_004_off00005237.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5237 25016 bytes
SHA-256: 3385bee3d326b1384afb5e79303e92efff8d885e63cd32042f25436b27efae47
font_01_sfnt_off00008c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C51 18408 bytes
SHA-256: baa68e8b80fe17984eb0f5893287011db8c451c65a8bba41303beeb2aadfa952

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