Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e54777a67cb10ef…

MALICIOUS

PDF

45.8 KB Created: 2021-06-04 01:08:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 82567cc508034e41c87c973eddd928d7 SHA-1: 4e36ad1dddab4e0cb8b9063129e6cf0efe2d6ede SHA-256: 6e54777a67cb10ef19e2aed53c2031450ecb44753858e81b4353168392232d6b
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, directing users to external websites. The ML classifier strongly indicates malicious intent, and the presence of a 'download' lure further supports a malicious workflow. The primary goal appears to be driving traffic to these external sites, potentially for SEO manipulation or to host further malicious 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.online/app/479516143/how-to-make-a-minecraft-bedrock-server-for-free-game-hack PDF link annotation
    • http://perpus.i2s-learning.com//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-hack-2021_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_off00005686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5686 25280 bytes
SHA-256: 1a354fd6a173b806b6bf9ff3f35499b69d70b75f1b5160b52cd0ca9628dcb23a
font_01_sfnt_off00008fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD5 18548 bytes
SHA-256: 26044553e92321599cf59338cda4d59957dfa2c28c9238069428c4e143752c86

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