Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f2a00cae561091…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 19:43:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8d213a503f278537905bb4ba9a2af864 SHA-1: 6af8cabe880b4b1a9b2047274022114a5394bda9 SHA-256: 49f2a00cae561091bc9f34b2a02a8e819f80a92c7261e914d66a55b386e92d31
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are presented as download lures for game cheats and virtual currency. The primary URL, http://netcdn.tw/app/406889139/how-to-hack-coin-master-in-pc-game-hack, suggests a malicious intent to redirect users to potentially harmful content. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, further supporting the malicious nature of the document.

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/406889139/how-to-hack-coin-master-in-pc-game-hack
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-roblox-toy-codes_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/mine-minecraft-games-for-free_GM479516143.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-free-hair-girl_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021-unpatched_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-robux-and-no-human-verification_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/mcpe-master-coin-hack-apk_GM406889139.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/coin-master-spin-hack-no-verification_GM406889139.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-roblox-hair-to-wear_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-pet-simulator-free-vip-server_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/free-roblox-accounts-pastebin-2021_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/jailbreak-roblox-hack_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/minecraft-hack-download_GM479516143.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/pubg-uc-online-generator_GM1330123889.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/legit-coin-master-hack-without-verification_GM406889139.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/roblox-cheats-for-laptop_GM431946152.pdf
    • https://www.rajmahalproductions.com/uploaded_files/userfiles/files/robux-hack-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032eb.bin
ba08e8b34d185e0ebc23670e95064d145eb191dceb6b63f9ed5fb67bc4c9d0a6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32EB 23188 bytes
font_01_sfnt_off000066e3.bin
1ae8d6708afcdedc116e53bf35aad2edbac2f051982770d0f2afacaeb630797a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E3 18320 bytes

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