Malicious PDF — malware analysis report

Static analysis result for SHA-256 853f3d4ed82bd853…

MALICIOUS

PDF

8.1 KB Created: 2021-07-05 06:50:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c28b5699d9f42dbc18e10a2d2aad390c SHA-1: 5dacc5f049722fb9649c3ae06b65a5710b04fd17 SHA-256: 853f3d4ed82bd8532123ea85860e8852f3ad118d67baf7efdef82ebb97ad47f0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, that promise free game currency or hacks. These links are designed to lure users to potentially malicious sites that could host further exploits or phishing content. No scripts were extracted from this sample, but the embedded URLs and the nature of the lures suggest a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9608

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/black-free-tshirt-template-roblox-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan//repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/cool-free-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/groups-in-roblox-that-give-you-free-clothes_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-into-a-roblox-players-login_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-nicksterv_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-no-human-verification-or-survey-2021-safe-website_GM431946152.pdfIn PDF document text

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