Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84833a0d1094678…

MALICIOUS

PDF

18.9 KB Created: 2021-05-15 12:06:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 91bed851157936686a2fc53306e12bbd SHA-1: 5fc81c0e6236c4b6c3164db8459794e9ba628930 SHA-256: e84833a0d1094678b81900a06f94937f5c3dd27ab2b39f0c334313f232778ffd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The ML classifier strongly indicated maliciousness, and the document body confirms the deceptive content. While no scripts were extracted, the presence of multiple malicious redirector links suggests an attempt to lead the user to a compromised or malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 https://netcdn.xyz/app/406889139/get-free-spins-coin-master-link-game-hack In PDF document text
    • http://grupodin.com.br/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://grupodin.com.br/images/level-coin_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://grupodin.com.br/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coins-master_GM406889139.pdfIn PDF document text