Malicious PDF — malware analysis report

Static analysis result for SHA-256 297fcc72ed81c490…

MALICIOUS

PDF

41.2 KB Created: 2021-05-19 20:33:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 399d0e7f54748144b19eda024ff9d586 SHA-1: 7498798729313b3b8d8e3f8d3d80ce0048ccf73c SHA-256: 297fcc72ed81c490320276e46c7ce9144e1c870613dfd6466293eb43033eb95d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free generators for games like Coin Master. The ML classifier and specific PDF heuristics strongly indicate malicious intent. The embedded URLs are designed to lure users into clicking, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/406889139/coin-master-daily-spin-free-game-hack In PDF document text
    • http://oceanos.pl/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004722.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4722 24976 bytes
SHA-256: 946f7c6da1873d13899ebf658bd79dc2dea5a9111e826533f84a6120383818d9
font_01_sfnt_off00007ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA2 18308 bytes
SHA-256: 213ea0fed5678e19eff32fcc5d46e69a4f1b73f67043b57a178cf12547108d4a

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