Malicious PDF — malware analysis report

Static analysis result for SHA-256 7646a0dae7ef2919…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 22:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b5a5e59ab765205ec762994acd2475c3 SHA-1: 80fc555b571653b36fe95d567f807d3c93cacdd7 SHA-256: 7646a0dae7ef2919fbffa93c2e3bdbf74b9d5e9f1e6e2bb4f08f1a5dc79cbbbb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/despair-roblox-hack-game-hack PDF link annotation
    • http://opac.kolejkrim.edu.my/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-adopt-me-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-the-quarry-fire-crystal-hack_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-private-server-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/rbxcity-free-robux-instant-pay_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/wings-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-star-wars-clothes-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-case-clicker-cheat_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-speed-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-a-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/no-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-free-robux-generator_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_off00002ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED0 21948 bytes
SHA-256: 0366f1809aafaf27c103a20548d94e52a535835145eaec98a0fedb272b812944
font_01_sfnt_off00005f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F68 19120 bytes
SHA-256: 81382bca8298e62028d5e70a8efba6648625d71c4796ed967b26120364fdab4c

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