Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90b1f8cf7cc8565…

MALICIOUS

PDF

13.6 KB Created: 2021-07-05 14:32:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2f18fa301446d299a45894a849a43e0d SHA-1: 04b8b0a8b2e6f355f6f9603d252c44061ee438d2 SHA-256: d90b1f8cf7cc8565835f8f94547f234b43a7d0f53487845f0ab2b5b034c80130
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically advertising 'free spins' and 'game hacks' for popular titles like Coin Master and Roblox. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirector links and the ML classification indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

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/406889139/coin-master-free-spins-2021-today-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-wild-savannah-inf-health-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-2-player-tycoon-cheat-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/cheat-roblox-skin_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-hack-no-verification-legit_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/crashed-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-for-money-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-2021-no-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-jeans_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text

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