Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aec7702eefdcbc3…

MALICIOUS

PDF

45.4 KB Created: 2021-06-08 23:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 22c9767ab23a69e0d70ef37eabf4c8e0 SHA-1: dd1ff3e3f58dd7622449beed6f4fe8e4a103ff03 SHA-256: 7aec7702eefdcbc3cf4355ce31ca0ddf31e831539d3b7fff77f14f861268aeb1
102 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. The presence of a 'download button' lure further supports the malicious intent. These factors indicate the document is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/los-mejores-hacks-para-roblox-cheskoo-game-hack PDF link annotation
    • https://perpustakaan.unitomo.ac.id/repository/how-do-you-getv-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/boku-no-roblox-remastered-op-gui-script-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-2021-november_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-fun-com-free-robux_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_off00005159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5159 25584 bytes
SHA-256: 2c245b0bf734da787020df18d64e476b7fd825f3a0cefe266afb19d28c436b66
font_01_sfnt_off00008d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5B 18888 bytes
SHA-256: 267f00a38cc2ca5fd1cf6625439dcb9e37fa2a802913eabb587049ec488894b5

Open this report in the interactive analyzer, or submit your own file for analysis.