Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25b4f2a8f972a94…

MALICIOUS

PDF

47.2 KB Created: 2021-05-14 23:45:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 14f276780dcea06999560a83431adf86 SHA-1: 79549d7c46206b47e058fb19ad26ce81e4636a8b SHA-256: c25b4f2a8f972a94a722019551b35d16a5724d6115b6307131ccef7d3f25ea9a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering 'free generators' or 'hacks' for popular games, indicating a lure for users to download potentially unwanted or malicious software. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to malware download or further compromise. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-free-link-today-game-hack In PDF document text
    • http://oceanos.pl/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/minecraft_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b30.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B30 24840 bytes
SHA-256: 334247ba8fcd9a6b20cc9aaec771e6c31b823043aaab7e2b375b07970aaf2804
font_01_sfnt_off00008401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8401 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off0000961a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961A 18232 bytes
SHA-256: ac7637c34b6ea6a17139aeea995219f6842183aaecfc204fce9d36f337c74847

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