Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d07d6b8d6a63804…

MALICIOUS

PDF

45.0 KB Created: 2021-05-12 12:23:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 920adf8c0972e54681df344369070c49 SHA-1: 2c287479f5815afaf6cb63f196ded9780c036249 SHA-256: 8d07d6b8d6a63804c25c17ef3eabf69a6afbc3c4ea28f139dc1bb1ae208bd72a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a phishing or social engineering attempt. The primary URL, https://netcdn.xyz/app/406889139/coin-master-hack-spin-generator-game-hack, is likely a lure for users seeking game cheats. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-hack-spin-generator-game-hack In PDF document text
    • http://tileworld.com.au/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/rbx-earn_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-mobile_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_003_off00004dc8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC8 29720 bytes
SHA-256: cc368365b8642817db2f0a8ec92d57f263946eeb7b6507c6967e0a2bff161dea
font_01_sfnt_off00008eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EED 17892 bytes
SHA-256: fb469e3bf9035f41b30956febb327ba05298378f8328666f03cb40abfa022080

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