Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ff0f0d4ee2c17c…

MALICIOUS

PDF

36.8 KB Created: 2021-05-21 06:05:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 79e04828ed51634bf1f4eed2d45ab8e1 SHA-1: adbf3ee84e44652b2541f20483435a23fa63290c SHA-256: 08ff0f0d4ee2c17c834edfa69dd5d040f941df35723e3118284ce562c1074634
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising "Coin Master Free Spins" and "game hacks". The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spins-for-today-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure to drive users to potentially malicious content or further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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
    • http://ukrainiansofbuffalo.com/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://ukrainiansofbuffalo.com/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://ukrainiansofbuffalo.com/images/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://ukrainiansofbuffalo.com/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://ukrainiansofbuffalo.com/images/free-unlimited-coins-for-coin-master_GM406889139.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_002_off00003496.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3496 25284 bytes
SHA-256: 516937ff03535842d89479e3e146f047f238acac948ef731026dd4a68da0f642
font_01_sfnt_off00006e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E76 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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