Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa9d99a60138293…

MALICIOUS

PDF

43.9 KB Created: 2021-05-15 02:13:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bfad369f04a3cc1943ae7981b26a27d6 SHA-1: 815230b72b3dfd606b69c4ef92298a85bcb8aa21 SHA-256: 8aa9d99a601382934288e40c259d9a0fa99d53c42de7ceabf2f01329c6ef220d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a document body that attempts to lure the user with game-related cheats. The primary link, 'https://netcdn.xyz/app/406889139/cheats-to-get-free-spins-on-coin-master-game-hack', is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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/406889139/cheats-to-get-free-spins-on-coin-master-game-hack In PDF document text
    • http://www.inoxograde.hr/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coinmaster_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-generator-no-survey-no-download-no-human-verification_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_off00004a9e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9E 30780 bytes
SHA-256: ffbf5b3e8e8b26fb9db5ba20553bd4214135a3e0b48284da083240c7b41bf443
font_01_sfnt_off00008a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A54 18052 bytes
SHA-256: 0a74732311e226e6da077b2a07c27a5ff120f22299104ca8c83dfc6510fe4137

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