Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5a7f1f0a6876e2…

MALICIOUS

PDF

45.9 KB Created: 2021-06-10 22:41:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e9d3ab41051a7c62f970925fa2b97265 SHA-1: 808ae85e9b7ce7d2b11281688f699018984070c2 SHA-256: dc5a7f1f0a6876e2f60d97c5ff42b12ad58e0d46b106e6421e8e2040e7ef4d3c
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 0.9864

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 https://netcdn.tw/app/431946152/roblox-cheat-engine-walk-through-walls-2021-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id//repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/world-zero-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-jailbreak-hack-apk-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/static-moonactive_GM406889139.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_off0000517f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517F 25356 bytes
SHA-256: 05126d3f74745a8628aec38ac173dba823b778c0bf04bb35860aa812fdb550e1
font_01_sfnt_off00008cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC7 19600 bytes
SHA-256: 9b48ad87835e11e9b170dd3f54be0955a0861d3b5f4e01c1edc8c9481e7ecae0

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