Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9e8e8a645636f3…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 09:59:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ab98d8261a090cb9ca43c0d40d22055b SHA-1: 4e13eb9ee8b6b47220a53996a756216d38072e95 SHA-256: 2f9e8e8a645636f32296538982aef7404af7d600fff8ca6b6d4c20c604c534d1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are SEO-optimized and promise free in-game currency or hacks for popular games like Roblox and Coin Master. The presence of a direct link to 'netcdn.tw' and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's structure and content suggest a phishing or scam attempt designed to exploit user interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-hack-any-roblox-account-game-hack PDF link annotation
    • https://www.simplenepaltravel.com/userfiles/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/como-tener-robux-gratis-sin-hackear_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/roblox-walk-through-walls-hack-download_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-coins-on-coin-master-2021_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
font_00_sfnt_off00002d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D77 21788 bytes
SHA-256: af1ef3252d434cadbe3e244118dbf69332827c5610017544453d80361a73ba5c
font_01_sfnt_off00005d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D81 19244 bytes
SHA-256: 6d65792bfd45bcee93e0a3a5c2653c8cc75893afabb3de85f48b4c2dd1390979

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