Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f216d6a9a02a9a…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 09:18:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d08a0c4fade72648e51528e3a150376d SHA-1: 3ff740c7a317efce4d0d41c55419de44852585fb SHA-256: e8f216d6a9a02a9a49649d3eecb93b3e89331da1439bb80e7ec18a5d12b47017
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and extracted URLs strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a social engineering attack.

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-account-game-hack In PDF document text
    • http://w-i-r.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/coin-game_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/robux-earning-sites_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_off00004952.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4952 24748 bytes
SHA-256: e988756f990b37ee917c9d3cd98df71f037ba46f396278604ee41bf49d60aef1
font_01_sfnt_off00008236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8236 17848 bytes
SHA-256: 81db58af0d0a7c54bfcbf00b0a30aba5f5662412ae545e00ecca40055587a372

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