Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ed02ca3931b975…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 07:03:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 896dd2cfa7930fe0c6562ab9cc5a0595 SHA-1: 4207e2cd1592dd6ae5cd2ed384ab5c363e57d3d8 SHA-256: 83ed02ca3931b975d729fd6511b2f0a7ebc1f467d73ecea6ec54d5b1df29032f
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-jailbreak-hack-download-game-hack PDF link annotation
    • http://lib.kesdammedan.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/pokemon-go-free-year_GM1094591345.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/hack-amievenalive-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-the-dump-work-at-a-pizza-place-money-hacks_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-free-fgteev-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-always-jump-hack_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/hack-for-roblox-wont-get-banned_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/cheats-power-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-camera-plugin-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-robux-on-roblox-2021-hack_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_off00002ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF6 22200 bytes
SHA-256: c7b83ba2110c670322ae7f725ac5ddcd43843e419c971f617b960b8c1ededdc4
font_01_sfnt_off00006110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6110 19448 bytes
SHA-256: c6b402b96529d0790e5d7e1f1484851c98e2ea285be43ed7d04bfb6fa8727121

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