Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bbc65ffcd27ec8…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 06:54:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 23042fafe22972d7990e572e9dfa3720 SHA-1: dc569a3b452d78100f79b7f7c10c3ed18664ed61 SHA-256: 29bbc65ffcd27ec80a5e0bca610c07b6fba7fc39ec886fd919a500f66376eecf
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/431946152/free-premium-roblox-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/how-to-get-catalog-items-for-free-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pubg-uc-hack-online_GM1330123889.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-much-pokemon-go-free-today_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-pbb-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-local-fly-script-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-code-for-roblox-december-2021-unicorn_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hackers-list_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_off0000309f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309F 22936 bytes
SHA-256: 238b6dd8b87aa85abfa01e57cec349a6062508b88023afcb93fa6a1d55846263
font_01_sfnt_off0000640d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640D 19324 bytes
SHA-256: bffeb858734709d9e626e1cf7762beb37c79d024cf91ee5740b88d17242ac5df

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