Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc84fb131ee89e1…

MALICIOUS

PDF

16.0 KB Created: 2021-05-17 09:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 2207263b8978c280158c676a733bb573 SHA-1: 411d0bcd423641e2c8b2760bb72ffed5d744bafe SHA-256: fcc84fb131ee89e1ba8aee315c85dbb6154b53c13b48fff4d04855e93c5238b2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, that promise free Robux or game hacks. The document body and embedded URLs suggest a lure for users interested in online games, likely leading to a phishing or scam page. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, potentially leveraging JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.xyz/app/431946152/free-robux-generator-2021-game-hack In PDF document text
    • http://www.drent.se/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/robux-app_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.drent.se/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.drent.se/images/actual-free-robux_GM431946152.pdfIn PDF document text

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