Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ae01bde85f7fbd…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 15:24:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3fd9dbd1c39ce946eb1b028297f5fb83 SHA-1: f7e9f40c2e20c16b014565bb40c80529d270ef05 SHA-256: 06ae01bde85f7fbd7127db57d7d72c0e2ce45217da0f994f929478bed9d931bc
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on suspicious domains and appear to be part of a link farm designed to attract users searching for game cheats or hacks. The ML classifier strongly indicates maliciousness, and the presence of a 'download button' heuristic suggests a lure for users to download further malicious content. The document body and extracted URLs point towards a phishing or malware distribution scheme disguised as game-related content.

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/how-to-get-admin-on-roblox-for-free-game-hack PDF link annotation
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-hack-roblox-pet-traininer_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-jump-hack-phantom-forces_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-hack-and-get-robux-and-vip-no-surve_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/coins-master_GM406889139.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-dll-hack-windows-7_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-free-robux-for-free-on-ipad_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/hack-skywars-roblox-2021_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-lumber-tycoon-2-hack-xbox-one_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-free-shirts-roblox-2021_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-copy-paste_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-gun-simulator-money-hack_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-cheat-engine-on-roblox_GM431946152.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_off000031d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D6 22160 bytes
SHA-256: b94c4871b4df4b58751f2b5e72c43634bd9043a822dd8cff76c5a5983c918dff
font_01_sfnt_off000062f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 19472 bytes
SHA-256: 81869e431d4569a69fe927aefbccd07bdac45b6bbde18abc0ced43cfcb94756a

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