Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3c7ce85c1674a6…

MALICIOUS

PDF

48.7 KB Created: 2021-06-11 01:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9271f415d2eccaceb120bdcbcdd8f3cb SHA-1: f1da50894c2514f9b909dc2e27ddd8253f61aedf SHA-256: 6c3c7ce85c1674a6f95c1426bf2c367517721d1861d80bb283825d090ee9e33c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites advertising game hacks and free in-game items, suggesting a lure for users to download potentially malicious software. The ML classifier strongly flagged this PDF as malicious, and the presence of external URI links further supports this assessment. While no scripts were explicitly extracted, the document's structure and content indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/roblox-hack-version-free-download-game-hack PDF link annotation
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/robux-best_GM431946152.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.sepl.net.au/uploaded_files/userfiles/files/free-spin-online-tool-coin-master_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000513c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513C 24428 bytes
SHA-256: b0a4ac93ec6feb62e74760312b1a9b013f681e3183edc546d18193a2bf7db839
font_01_sfnt_off00008908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8908 6700 bytes
SHA-256: ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27
font_02_sfnt_off00009946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9946 19108 bytes
SHA-256: 28380d6bad41f41a8350546e9bb2aed2213aaee5d03d573a8f0bacd95e0e1eb0

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