Malicious PDF — malware analysis report

Static analysis result for SHA-256 75cad22ae21251db…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 11:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aff0f8626be5ea36e14ddc4d3afb4d20 SHA-1: 7d8a4be89b9d997f852bfc8e4d753a2b961f9f0a SHA-256: 75cad22ae21251db8e1e34235288d3f53d8ef11faaae9e9a3a1df37bcdbb3780
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 game hacks and free in-game currency. The heuristic firings confirm these links lead to known malicious redirectors and lure users with game-related content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/roblox-arsenal-hacks-download-game-hack In PDF document text
    • http://www.inoxograde.hr/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/wurst-commands_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/give-me-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-hack-download_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_off00004790.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4790 27104 bytes
SHA-256: 0c6d50d6ee3eb7ceaec677e7fb9a80ea5efc694f53d1cf664a002f1bcbc486ac
font_01_sfnt_off0000857b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 18688 bytes
SHA-256: 3194e743087210276cc8ef30afa20718d77c17967e4a232ddce90cfa751f40c3

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