Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a295e2e2287cf3…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 07:17:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 84632ec6e13f4ffc8a28365b1ba08b25 SHA-1: 80f7d016c0e2453770d0d678cb5add0bfe713a34 SHA-256: b6a295e2e2287cf35e75e544b49342fd832e96cc7efc603cf4b9687421a9305e
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/roblox-free-bundles-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-web-store-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-robux-hack-2021-pc_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-com-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-robux-202100_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/adidas-t-shirt-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-ultimate-driving-cheats-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/pokemon-go-free-zone_GM1094591345.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robuxian-com-free-robux-code_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_off00002f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F19 22116 bytes
SHA-256: 6ba2f7e56a4a48e163c8153254a958f20c0d3a91c1d02e4716c237ad79bc4e07
font_01_sfnt_off00006045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6045 18964 bytes
SHA-256: c92e42bb26df758d0ede5fbc703833b645d0b878db7a54c24e51c73b8a7d06d3

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