Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf155f9e2a1ad8f…

MALICIOUS

PDF

16.0 KB Created: 2021-06-29 13:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: be41e49a0809f76c9ed5ea7e5e541424 SHA-1: 58b452d03197e7a6e4cc6e42b7a9822db4493fca SHA-256: abf155f9e2a1ad8f4196a1ed64c6f8f44d12dc9726d6fab4badff776b8ffe7fb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' generators and game hacks. The primary redirector URL is http://netcdn.co/app/431946152/how-do-you-get-free-robux-on-games-game-hack. This lure is designed to trick users into clicking the link, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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.co/app/431946152/how-do-you-get-free-robux-on-games-game-hack In PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-free-adidas-teu_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-super-easy_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/bloxburg-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-it-isint-free_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-free-robux-on-computer-2021-real_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/robux-link_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/people-on-roblox-who-give-free-things_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-final-stand-cheat_GM431946152.pdfIn PDF document text