Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d8f67d7253e9ba…

MALICIOUS

PDF

40.2 KB Created: 2021-05-22 02:44:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1005b5934f50a45e298cc31864eefe1e SHA-1: aecbc4044ad46b99714739fc221049ac7d680e9f SHA-256: 35d8f67d7253e9ba57a4fc343d4e40bf2e890b084a87585a9e43804e83bae2b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games. These links lead to known malicious domains, indicating a phishing or scam attempt designed to lure users to potentially harmful sites. The document body and heuristics confirm the use of lures and redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7877

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-spin-and-coins-links-game-hack In PDF document text
    • https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-online-hack_GM406889139.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_002_off0000348b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x348B 26628 bytes
SHA-256: e47931fb42df27ba7cde7908292f2e370be6fb0347f4c994b2434dcf5191c522
font_01_sfnt_off000071b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B7 2980 bytes
SHA-256: 66de8b3278b19ce338bd39d802648449c21b92b9d4364fab864b10a133f6b3de
font_02_sfnt_off00007c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0C 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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