Malicious PDF — malware analysis report

Static analysis result for SHA-256 07af41989bb9d7b9…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 11:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 85dad7fb9d64e78c9ae081299ae67746 SHA-1: 1821f71a74cdf05c08120feb14119e111024c559 SHA-256: 07af41989bb9d7b977d273672b995b91e2a7d7b321459049c0b6a898ef630362
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a lure for free game downloads, specifically mentioning 'Minecraft Story Mode', and contains a high-risk heuristic for remote support tool lures. It also includes an external URI pointing to a suspicious download link. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to trick the user into downloading and executing a second-stage payload, potentially related to remote access or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/479516143/minecraft-story-mode-free-download-game-hack
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-links-to-coin-master_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/robux-2021_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/minecraft-pocket-edition-hack_GM479516143.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/easy-points-gg_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-many-villages-are-in-coin-master_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/facebook-coin-master-hack_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-free-link-blogspot_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-roblox-premium_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-roblox-templates_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/best-minecraft-hacks_GM479516143.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d4c.bin
dd2621f1d7d3b82d6748fcd242ca1a370a12ab36d645dd24b7ca22d0e3bf99f5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4C 24876 bytes
font_01_sfnt_off0000859e.bin
b60985c1befe233451c1e4628b3545798255342bb86f0eafc92eb610c8c57488		 pdf-font-stream PDF embedded font (sfnt) at offset 0x859E 18468 bytes

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