Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c1fb69f1958335…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 05:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c729e213fb75ccba56e95de7246024f SHA-1: 770ca33aa50080b8da19ef9df7bab4c2d50c8332 SHA-256: 36c1fb69f195833533ffbfe499184bf61039dfaaedc71a24561491822e0d2237
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-today-game-hack. The document body and heuristics indicate a lure for game-related cheats, likely to download further malware or lead to phishing pages. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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 http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-today-game-hack In PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-system_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-10-robux_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/pokemon-go-free-and-verizon_GM1094591345.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/free-roblox_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/roblox-anti-cheat-bypass-script_GM431946152.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coinmaster_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • https://www.takathmanduhotel.com/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F81 22732 bytes
SHA-256: 8216a08ef054d29b6d188cc6db93e3cf8a6b967524f96117181ed4c0a713a745
font_01_sfnt_off00006239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6239 18528 bytes
SHA-256: c6d34434b98ec777a59c4678426a17bd147c4f2a1b2f1ec5dc00fcba7f8d4173

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