Malicious PDF — malware analysis report

Static analysis result for SHA-256 909e521d70faccef…

MALICIOUS

PDF

10.8 KB Created: 2021-07-05 20:18:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 27546aa69c3fdcdfde838df9072bbf77 SHA-1: ed4656720e104dedd2535cc4e14863e56c4637bf SHA-256: 909e521d70faccef8c1ed63b86ae6f89716eff5bcd582b941b8cd9ac015cd6dc
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document acts as a lure, presenting itself as a 'Coin Master Hack' to entice users into clicking embedded links. These links lead to a malicious redirector infrastructure, which in turn directs users to further scam-related content. The document's structure and embedded URLs strongly suggest a phishing or scam campaign aimed at generating traffic or potentially harvesting credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-hack-without-root-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-find-hacker-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/pubg-uc-4all-cool_GM1330123889.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-accounts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/redline-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-hack-how-to-get-free-tix_GM431946152.pdfIn PDF document text

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