Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9fcbc4912a534f…

MALICIOUS

PDF

16.0 KB Created: 2021-06-10 22:59:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 49e586b09487cb76f7562fb75edd6c75 SHA-1: c677eb23e57c2b6b8cbb86c97b16af2a3e3534e4 SHA-256: cc9fcbc4912a534f4dfef20bf242b92865366e8af88c38bac3958a07fca1d27a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a lure, leading users to click on a link that likely leads to further malicious content or exploits. No scripts were extracted, but the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt.

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 https://netcdn.tw/app/431946152/op-rewards-roblox-hack-game-hack In PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-hack-royale-high-on-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hack-forum-for-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-2021-spin-link_GM4068891In PDF document text

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