Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d012741e8270312…

MALICIOUS

PDF

21.9 KB Created: 2021-07-06 01:22:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 94fb48fce04214a533a5d3506c873890 SHA-1: 2ecd371d64eeeb7b25d7ef648727ef1ae7d03ed5 SHA-256: 6d012741e82703120bc3082e115d4685aaebd0ea936ed3984e411f7dfbea926b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirect URL is http://netcdn.tw/app/406889139/free-spins-coinmaster-game-hack. While no scripts were explicitly extracted, the nature of the embedded links and the heuristic firings strongly suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for further payload delivery or credential harvesting.

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/406889139/free-spins-coinmaster-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/why-is-robux-not-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-skins-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text

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