Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7f8fff74a8b260…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 03:34:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c787a285cf6dea0dd00579424795a2e SHA-1: 756f5825445ae52af19bca5b47ffcb4dcdaffe6e SHA-256: eb7f8fff74a8b2609640d6ee3b45ec3fefae125de981faf9f3c12299f94d57a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game hacks and free currency to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts other malicious PDF files. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a malicious workflow.

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/cheat-codes-roblox-xbox-one-game-hack In PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-redeem-code-free-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-hack-exploit-project-pokemon-site-youtubecom_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-hax_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-games-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://malarvadibalasangam.org/ckfinder/userfiles/files/roblox-hack-game_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_off000033a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A1 21464 bytes
SHA-256: 6ba6113816374186161f432416ed7552495ed06f51d22bcea11a4979c2dcedcf
font_01_sfnt_off0000623a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623A 18932 bytes
SHA-256: 6f67332d669732261f036c8e7dcb6eca92822d169836df60d3f6afdbcbec77b0

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