Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2fd7d7b707e304f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 12:50:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 879fd110b0dc21be524cff97a330c8b3 SHA-1: 782791cbdbf661c47afa7404d90a79cd7a1a98ef SHA-256: e2fd7d7b707e304f8e1cccd9e399ee960d4bdd389aa762b83d39d153348cdb86
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to files related to game hacks and free currency. The presence of a 'download button' heuristic and the ML classifier's high confidence score suggest a malicious intent to trick users into downloading further malware. The document body itself contains a URL that likely leads to a malicious download.

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.co/app/431946152/fre-shavacado-song-compilation-roblox-id-game-hack
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/robux-free-c_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-spins-coin-master_GM406889139.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/minecraft-xbox-free_GM479516143.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/get-real-robux-for-free_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/play-coin-master-for-free_GM406889139.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-pet-treats-coin-master_GM406889139.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-roblox-steamy-xxx-vids-lol_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-ways-to-get-robux_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/2021-free-robux-glitch-in-febuary_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/roblox-how-to-remove-your-head-for-free_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/minecraft-pe-016-0-apk-download-free_GM479516143.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/roblox-boombox-free_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/coin-master-free-coins-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb0.bin
a1b773b8323f2c40a860329e5f4fc7a49e0138e9bea02a94c26c3da384bc5421
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 22276 bytes
font_01_sfnt_off00006033.bin
65a750ee6f4a8bc95647939a8b44b57a40cfd031399a4493d7856dbfec9d817c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6033 19764 bytes