Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4e23d29271e4be…

MALICIOUS

PDF

30.3 KB Created: 2021-06-20 01:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2ba914dcea7dd94515197715d38b0e5b SHA-1: 7e630c46a1bc69f537a295fc5090c1872eb00c3c SHA-256: 5d4e23d29271e4bea193a617efff9725781522238755457c091c35ba5ceb4e44
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, identified as a link farm, that redirect to various websites offering game cheats and hacks. The document body also contains similar URLs, suggesting a lure to trick users into visiting potentially malicious sites. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs points towards a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/roblox-sex-cheat-code-game-hack PDF link annotation
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/como-quitar-no-soy-un-robot-en-free-robux_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/free-robux-no-surveys-no-human-verification_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D8F 22344 bytes
SHA-256: 06da169e0be525a53d50304d8f12f0c5afb6bf4bcbabe7da8a5e375013f4be3d