Malicious PDF — malware analysis report

Static analysis result for SHA-256 9de7321451a6c29d…

MALICIOUS

PDF

41.6 KB Created: 2021-05-12 12:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5663ffa25d59ab816793c751c7cd521 SHA-1: b45d2843bbec1a4ec89cd50ce523cdddb1a2faee SHA-256: 9de7321451a6c29d9de097a2c201b4c178e543c4364eb69c297d9b0debefec1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, including one pointing to a site offering 'coin-master-free-spins-for-today-game-hack'. The ML classifier also flagged this PDF as malicious with high confidence. The presence of these URLs and the ML detection suggest the document is designed to trick users into visiting malicious sites, likely for downloading further malware or engaging in scams.

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-for-today-game-hack In PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/113-hacked-client_GM479516143.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://bartonprivate.com.au/sites/default/files/files/roblox-hack-site_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
font_00_sfnt_off000048c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C4 24468 bytes
SHA-256: dceb06da2dfc4672b393391b4c5c6c0617d7c1c99d0cfa2c0cf295810c22aaac
font_01_sfnt_off00008067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8067 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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