Malicious PDF — malware analysis report

Static analysis result for SHA-256 51f1a180cac63d30…

MALICIOUS

PDF

15.6 KB Created: 2021-06-26 03:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 54f14f705c36c9f939d6fe7cf64fbc04 SHA-1: 585dcc2564b05150f62f4aed32f9bb9d71f4aac1 SHA-256: 51f1a180cac63d306d8eaddcfdc3c98e804d92476bff7960492b43b3c5aa0cef
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 'game hacks' and 'generators' for popular games. The primary link, http://netcdn.co/app/431946152/viper-venom-hack-roblox-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the nature of PDF redirects often involves JavaScript to facilitate the redirection, hence the inclusion of T1059.007. The overall goal appears to be social engineering users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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/viper-venom-hack-roblox-game-hack In PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/joining-groups-will-be-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/final-stand-2-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/download-a-free-generator-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text

Related samples 8

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