Malicious PDF — malware analysis report

Static analysis result for SHA-256 5544bbb04e2f5f31…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 14:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 189047850c9fa43bfc5b8d2300f0ee2f SHA-1: 0d5be1aeac6bdce7aeb20840c87c464c6c0f2015 SHA-256: 5544bbb04e2f5f3128a9ffde3ef2465aaa3ff2e731e77408ff19ea032fbecd35
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/free-robux-games-on-roblox-game-hack PDF link annotation
    • https://pustaka.staiyastispadang.ac.id/repository/goo-recording-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/flying-hack-in-roblox-parkour_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/descargar-hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/roblox-free-hats-catalog_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/roblox-anime-fighting-simulator-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/how-to-get-free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.staiyastispadang.ac.id/repository/coin-master-free-spins-link-whatsapp-group_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_off0000302f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302F 22320 bytes
SHA-256: a47bf80f3534df7843b68648016982f357aca2deac6e86c2f7ad18afebf1ffdc
font_01_sfnt_off000061ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 19052 bytes
SHA-256: 56f4e65812c403ac511da7c683eb66c8172328fd08918d47063ad90a487708b4

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