Malicious PDF — malware analysis report

Static analysis result for SHA-256 8598919e08528df1…

MALICIOUS

PDF

21.7 KB Created: 2021-06-28 00:20:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 19682e2beb7a44e14e6c340359df73ef SHA-1: 973428f9567a303ee25959bf230f5127df6ecabf SHA-256: 8598919e08528df1e707182e23a859198b03de9ad0ff5ea576f73f446a5733e7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as 'free generator' or 'game hack' lures, directing users to potentially malicious websites. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-2021-on-computer-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggest a phishing or scam attempt, likely leading to a second-stage download or further malicious content. The document's content and heuristic firings strongly indicate a malicious intent to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 3

  • 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 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/how-to-get-free-robux-2021-on-computer-game-hack In PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/freerobuxgenerator-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-hack-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/hack-speed-booga-booga-roblox_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-synapse-x-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/hacks-en-csgo-roblox-en-espaol_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/roblox-free-money-in-bloxburg_GM431946152.pdfIn PDF document text
    • http://acquacleanpiscinas.com.br/images/ckfinder/files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text

Related samples 8

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