Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bd6576d2933ca1…

MALICIOUS

PDF

41.5 KB Created: 2021-05-16 05:52:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d67b0561f278f81cf0d9b009e1914ccb SHA-1: c9263dd1afded6e2d3c15d51d84efaf87625e0d4 SHA-256: 64bd6576d2933ca15b6ed795ea97e09e38f7fb1df28b1d95490f2eab5b01ce5c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm. The primary URL, https://netcdn.xyz/app/406889139/moon-active-game-hack, is likely the intended destination for users seeking game-related cheats or hacks. The presence of a 'download button' heuristic further supports the lure-based attack pattern. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/moon-active-game-hack
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/robux-hack-free-robux_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/minecraft-bedrock-edition-free_GM479516143.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-hack-tool-for-pc_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-spin-coin-master-game_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-bobux_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/hack-coin-master-android_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-to-win-free-robux_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-new-cards-hack_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-spins-on-coin-master-app_GM406889139.pdf
    • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-fire-coin-master_GM406889139.pdf
    • https://coinmasterspinandcoin.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a67.bin
477d924465a61976945c3cf9e5b7110c65eed2a39b5782cf32bca82f6796e20d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A67 24324 bytes
font_01_sfnt_off00008222.bin
b07862f0f373366cf551fef15f89e8a11da93bc66f9809c3a9422b0bc64dfdde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 17432 bytes

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