Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5674b8b15cceed…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 16:27:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f225fa85187b9a22fa780996fb39eb98 SHA-1: fc805de52e2c5c1d35ce067448fdf522151b381e SHA-256: ab5674b8b15cceed2cce86532f281d4ff28545c1c7e407414784f3cb58a0c873
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'Coin Master Free Spins' and other game-related lures. The document body and heuristics indicate that these links are intended to lead users to further malicious content, likely for credential harvesting or malware distribution. The presence of multiple PDF links suggests a chain of malicious redirects designed to obscure the final payload.

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-spins-link-no-verification-code-game-hack In PDF document text
    • http://oddgraphic.com/images/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://oddgraphic.com/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://oddgraphic.com/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://oddgraphic.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/how-to-actually-get-free-robux_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_off00004a4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4D 24776 bytes
SHA-256: fc5b7be331beb974ad91e1fb99a12b6bf8f5d8cebcdee9f746ec6125708e85d8
font_01_sfnt_off0000821e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821E 18364 bytes
SHA-256: 32f8b4adb1641f00b1b9d0931c2fb14585cf1e121e0c59b47926bcef0ce50eef

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