Malicious PDF — malware analysis report

Static analysis result for SHA-256 325fbca486789632…

MALICIOUS

PDF

45.9 KB Created: 2021-06-09 02:43:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: eaf5e238e43055faa01840a897be59ad SHA-1: 1006a6c7f474063972cdddbc5fb21fa6e106eb17 SHA-256: 325fbca486789632155e783e82e9eac73b03aa145003bf73b6a4efef26046f31
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 0.9864

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/how-to-hack-people-in-roblox-with-robux-game-hack PDF link annotation
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/sites-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/roblox-jailbreak-hack-app_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-robux-no-verification-no-download-2021_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
stream_004_off000052a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A1 25264 bytes
SHA-256: f9217c282ac90bc91269a560a059435f1195315127f225fd8e7111f1121c62af
font_01_sfnt_off00008d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D78 19404 bytes
SHA-256: e4ce0d64a05d1902e19dfd4cc0d776318023dd49d59df73f65f728ff23bbae29

Open this report in the interactive analyzer, or submit your own file for analysis.