Malicious PDF — malware analysis report

Static analysis result for SHA-256 511817aeb585975b…

MALICIOUS

PDF

34.3 KB Created: 2021-07-08 21:03:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f33aa2ef64384fc4cabde8034bc09273 SHA-1: 43417b9268c3899ef6505803681401716b4f8faa SHA-256: 511817aeb585975b972f0a2811012099dcdcabf5fb6ab94f6f7e34673f5db048
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.tw/app/479516143/minecraft-windows-10-hacks-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/dragon-riders-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-treasure-wuest-how-to-get-effects-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-enter-code_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/ich-bin-am-hacken-roblox-name_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-in-roblox-rc7_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-use-cheat-engine-on-roblox-august-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-btools-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-cheat-in-roblox-hide-and-seek_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-games-for-kids_GM479516143.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_off00002f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7B 22552 bytes
SHA-256: d03a2aa9373ea653a91491790f829c646aa2635def92028ae0c5854ffee15e29
font_01_sfnt_off00006162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6162 18980 bytes
SHA-256: d5302a4262de0fe7b8485f3acdacc44f64fa6fcaf4d5e81661a82341b69d1a02

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