Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84f9f6bcac82692…

MALICIOUS

PDF

43.5 KB Created: 2021-05-14 18:38:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ae3605ea141e5ebfd27cc0ea67e409e SHA-1: d59cf8ec48870b0a300df01e6d309a3a71d9fda8 SHA-256: c84f9f6bcac82692456213b4bc62b245efbe6fe4fe805e5c0ff11acde3a83866
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/google-coin-master-free-spins-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/google-coin-master-free-spins-game-hack In PDF document text
    • https://icefuture.ru/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/hack-client_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-100-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000474d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474D 24284 bytes
SHA-256: fcf792748facf71a63787d17623d3bdc80f7ca09f432eff5eaad24d6a3edaab2
font_01_sfnt_off00007de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8796 18248 bytes
SHA-256: d32188c22f9df4e49535359cc17236f14c93b7b5c7ebedc8928f30f104243849

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