Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bfb45994a2dc3f…

MALICIOUS

PDF

191.7 KB Created: 2021-07-05 15:58:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 700b0391d5ab7b81ec91ac47cb035db2 SHA-1: 2d6451802a150bcda817be40382c4964b54e69ea SHA-256: 47bfb45994a2dc3fb642be3a8c9a6105edc5c0b315bf6f2a02574de46a52008c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links pointing to a known malicious redirector infrastructure, disguised with lures like 'Pokemon Go Free 1Km Buddy'. The primary heuristic indicates that these links lead to a 'free generator / game hack' scam. While no scripts were extracted, the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4519

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/1094591345/pokemon-go-free-1km-buddy-game-hack In PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/how-to-hack-someone-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-hack-2021-unpatched_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-how-get-animation-pack-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-comment-cheat_GM431946152.pdfIn PDF document text

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