Malicious PDF — malware analysis report

Static analysis result for SHA-256 9815de684282eca1…

MALICIOUS

PDF

33.5 KB Created: 2021-06-18 18:18:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 54c1f660dfbc4a4298f2987e588071d6 SHA-1: b0ab4cb399f8b8057546966690c23370c52124c1 SHA-256: 9815de684282eca1bc09cdd6ee1b89caddbed7d1540ae759fe3b6d58ec3739a3
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs disguised as game cheats and hacks, specifically targeting Roblox. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm designed to attract users. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the file, likely leading to a download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/cheat-roblox-pet-simulator-game-hack PDF link annotation
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-robux-in-10-minutes_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-secret-page_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-hack-roblox-jailbreak-noclip_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/best-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-make-your-own-game-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/hack-for-project-sepra-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-speed-hack-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/roblox-drama-class-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/can-your-roblox-account-get-hacked-by-cookies_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-500-000_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/noclip-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/free-robux-with-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-robux-place_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-play-games-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/bear-face-mask-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.biologi.fmipa.unand.ac.id/repository/how-to-get-free-robux-no-human-verification_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_off00002bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD8 22312 bytes
SHA-256: e193a958df84eb5da2cf63382d6c2d6a56ab435fe695a551fe3aef4a2c0e8c37
font_01_sfnt_off00005d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D27 19428 bytes
SHA-256: 98f233ca617cde77c99d533a2fa75db5d51318029fce875459ba3100f89e6f90

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