Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6946b4b8a8e6e4…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 18:11:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a5a6156a3b7253ec31e54ba43746050e SHA-1: ea6f2be1c1caa26c4fe94c16d5c66888f6a5b119 SHA-256: 1e6946b4b8a8e6e4f027266b79c930b205141a8a5369bb8d84674d8f4f921b3e
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are designed to lure users into clicking on them by promising game hacks or free currency. The primary link, http://netcdn.tw/app/406889139/coin-master-free-spin-today-2021-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/406889139/coin-master-free-spin-today-2021-game-hack PDF link annotation
    • http://elib.upiyptk.ac.id/opac/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/boss-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/cheat-mobile-roblox-aimbot-apk_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-black-panther-shirt-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/we-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-dominus-and-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pubg-uc-shop-pakistan_GM1330123889.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-item-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3215 23160 bytes
SHA-256: 069aefdddcc6ffd7285eed8ccd0657bbcf7f85d0c3cc8f3d11a0e5d2fcc8b213

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