Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca8bc961aadc49f…

MALICIOUS

PDF

19.2 KB Created: 2021-07-06 07:34:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f6383375d46c2a842449bbd62c1866fc SHA-1: 8bf0dbe18611d2985c69d9e76b07768523895f02 SHA-256: 5ca8bc961aadc49f6d60a9d6ad06b1b48b571206b8870d73e448f23f6fe89668
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. The primary redirector URL is http://netcdn.tw/app/431946152/roblox-free-play-game-hack, which is designed to lure users into clicking through potentially harmful content. The document body and embedded URLs reinforce this lure, indicating a social engineering tactic to drive traffic to malicious infrastructure.

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.tw/app/431946152/roblox-free-play-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-plane-models_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/brick-bronze-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-exploiter_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pubg-uc-567_GM1330123889.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-ou_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/lemonade-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-antlers-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/rbx-center-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/can-you-get-banned-on-roblox-for-using-cheat-engine_GM431946152.pdfIn PDF document text

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