Malicious PDF — malware analysis report

Static analysis result for SHA-256 d265a858870436a0…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 19:43:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e0ac549e00c5c805b2a020facd5d522 SHA-1: bb60b295da16eb7828120eb4958fd27a43bba2f2 SHA-256: d265a858870436a0f965b3628d2a97acbfd18a0613257f427d232320ab548097
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/redeem-roblox-card-free-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-draw-youtube-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA1 21848 bytes
SHA-256: bab506cdf341fadcc5ccb6dd6a8ab2bc9bc0b5fb50c9c493d345d31ed11cd3c1
font_01_sfnt_off00005e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E76 19084 bytes
SHA-256: 28b83e4f342e4f09a2889314eefb4cea0c2396b4c6f42210c3755af6e96d1200

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