Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc9e0e3308ee755…

MALICIOUS

PDF

41.5 KB Created: 2021-05-17 02:37:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b513beae2154f02fbe89f42519663958 SHA-1: d1cf20d08c229dde733d94985d836891ced8b26f SHA-256: 4cc9e0e3308ee755af4dcd3af285fedba1ece8522bdd278d030f7bb0bacced4e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to malicious content, likely for credential harvesting or malware distribution.

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-free-cards-link-game-hack In PDF document text
    • http://fred.com.ua/images/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/easy-robux_GM431946152.pdfIn PDF document text
    • http://fred.com.ua/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://fred.com.ua/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://fred.com.ua/images/free-roblox-gift-card_GM431946152.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_off00004991.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4991 24016 bytes
SHA-256: f54bced3278e82506195534327c4548ca237476164e1e575434165bf3226d3fb
font_01_sfnt_off00008070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 18056 bytes
SHA-256: 4c00fba11e6222d30ce91962ad0846eff86227a46da4e4704094e367f0981575

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