Malicious PDF — malware analysis report

Static analysis result for SHA-256 b738866c262e03f5…

MALICIOUS

PDF

9.5 KB Created: 2021-06-19 21:13:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 647ec8e34e1f5b1cd6eb7ffa9eba76e2 SHA-1: d1042e4b462b46cdcb3ce8207eec0fd8612cbfce SHA-256: b738866c262e03f5b3e926c19db4fc66474f53a580278c8623ca0f45e2eba65d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game-related generators and hacks, including one pointing to a known malicious redirector. The primary lure is to trick users into clicking these links, which likely leads to a phishing site or a download of further malicious content. No scripts were extracted, but the embedded URLs and the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9869

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/roblox-game-dev-life-hack-game-hack In PDF document text
    • http://bgnails.nl/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/promo-codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-robux-hack-2021-lenovo_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-roebucks_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/win-free-robux-robux-robux-free-roblox_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-hack-any-roblox-game-with-scripts_GM431946152.pdfIn PDF document text
    • http://bgnails.nl/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://bgnails.nl/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text

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