Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d11cc724f5263d…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 15:07:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a196394722a88c5bda5d1f94e9a31b04 SHA-1: 9dc9e2af6c1627f4a932039bc3abc5ab133833af SHA-256: 93d11cc724f5263d1c20bbfee305e13ebf1a59963acea0eac3a4bbc0735d7576
142 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes downloading applications or accessing content related to game hacks and free in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the document may be intended to trick users into believing they need a password to access an archive, a common tactic to bypass security filters.

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.tw/app/431946152/apps-to-get-free-robux-game-hack
    • http://library.itekes-bali.ac.id/repository/games-that-give-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-hack-persons-account-on-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-jailbreak-hack-download-easy_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-weight-lifting-simulator-2-hack-script_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-free-download-for-pc-windows-7_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-toy-codes-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-marketplace-free_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/free-my-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-password-hacker-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/make-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-official-website_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-hack_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/i-want-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-treasure-hunt-simulator-202120219-cheat_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f39.bin
2e71581fd661e8bb6d3819f647ba2cd83140a26daa00cfbcf225ce8e0d00e4b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F39 22144 bytes
font_01_sfnt_off00006051.bin
5c2d20fe84271232cdb725bf1ee573f6c2a82921a8e85a5edc805d3c36d3e91e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6051 18996 bytes

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