Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f15a10f53f5b02…

MALICIOUS

PDF

46.3 KB Created: 2021-06-11 03:20:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0d167748737ca38a46a1a64e708a406c SHA-1: 272db78dc5f9461435eebcc17933e5056c24389d SHA-256: 96f15a10f53f5b02e965a31c769cc4d45a920f696238709a8d00da7adc99467a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9832

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/431946152/20210-robux-free-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-roblox-free-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-apps-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-free-gear-items_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/bloxpink-free-robux_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_off000053b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B6 26744 bytes
SHA-256: 345ed82e656683e31f03ce0dca727ac6e55a20e48df5ce34b528367e6fb05ff7
font_01_sfnt_off000091eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EB 18416 bytes
SHA-256: 1d58594525fc6e24d63297213ff6f940da3d45d2f4e1b1ac1617defda3adde21

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