Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a5d33ff54d29a18…

MALICIOUS

PDF

192.0 KB Created: 2021-06-21 23:35:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2d64aac4cb33488930cd070136ce28b4 SHA-1: 15aa9c8d5219e0a51ca9acc4365f7cc4df6b5876 SHA-256: 4a5d33ff54d29a182ba75eda601760add200d6cece1bfdf3273866983109b178
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple heuristics indicating it is a lure for game hacks and links to known malicious redirector infrastructure. The primary IOC is the malicious URL embedded within the document, which is designed to redirect users to potentially harmful content. No scripts were extracted, but the nature of the lure suggests an attempt to exploit user interest for malicious purposes.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3424

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/1094591345/pokemon-go-free-150-game-hack In PDF document text
    • https://limebug.com/media/storage/editor/files/_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox-jailbreak-money-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/arsenal-haIn PDF document text

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