Malicious PDF — malware analysis report

Static analysis result for SHA-256 287fbc54688eca3b…

MALICIOUS

PDF

34.5 KB Created: 2021-06-22 18:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d1a53e34c70309f40e367dc211076206 SHA-1: 04afafa2400c28fccad5d5a107e2a3b423822661 SHA-256: 287fbc54688eca3b659ca60a076af153b38c975bb7e6da3a26a25b5ac7b2f495
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and heuristic firings indicate a clear malicious intent to redirect users to scam pages.

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.co/app/431946152/free-robux-gui-game-hack In PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/if-you-join-this-game-you-get-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/csbro-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://ellobo.com.ua/ckfinder/userfiles/files/roblox-land-free-robux_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_off00003146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3146 22184 bytes
SHA-256: 79ff8c962ff665e6bef6dff33cb20bd1a490ae6103c4b96d1d11efd8d344cd2b
font_01_sfnt_off00006282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 18836 bytes
SHA-256: ff9e23d2ea850fa0641881c6165066bf2d2ab825d8e7c3bbd1201055bda504f8