Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebf007a91ac6731…

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 04:44:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 31b6efd725ff66b34398ca0c1e902ab5 SHA-1: c4a4bbb1fd4475467007257597cca2810a9568f4 SHA-256: eebf007a91ac6731cb67b8f8a1eb27f29c71b0d2614073404c72ba658a768020
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free Robux' and game hacks to entice users. It contains a large number of external links, many of which point to other PDFs, forming a link farm designed to improve search engine rankings and potentially distribute malware. The document's structure and content strongly suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/nicsterv-free-robux-game-hack
    • http://library.stipjakarta.ac.id/etd/repository/roblox-jailbreak-hacks-for-mac_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-a-group-on-roblox-to-own-it_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-gift-cards-codes-2021_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-apk_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-survey-and-no-human-verification_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/roblox-giftcard-code-free_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-cards-link_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/speed-hack-roblox-link_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/happy-birthday-isabella-roblox-speed-hacks_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-any-account-in-roblox-2021_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/20210-free-spin-links-for-coin-master_GM406889139.pdf
    • http://library.stipjakarta.ac.id/etd/repository/free-download-gui-roblox-twisted-murder_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/roblox-invitations-free-download_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/all-players-in-robloxs-passwords-password-hack_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-run-scripts-in-roblox-hack_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/arsenal-hacks-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/how-to-earn-free-toy-codes-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/btools-hack-pastbin-roblox_GM431946152.pdf
    • http://library.stipjakarta.ac.id/etd/repository/denis-free-robux-app_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003293.bin
cc16f1d5cbd064c5467c9bfe5b3a698a38da794ee30d8acb7fd196de16275cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3293 22572 bytes
font_01_sfnt_off0000650d.bin
34269cf2d045f8e5c1fb9aa2220c3836527373385891c70057c5d9c5719cb756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650D 19052 bytes

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