Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff9549a9c082ae2…

MALICIOUS

PDF

48.6 KB Created: 2021-06-03 09:58:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 75532d1feb68cb18e065ba405c25f598 SHA-1: d0a961aa9ee48f613050769ffb4ecd00d3bc97fe SHA-256: dff9549a9c082ae249d331e95e43baf413384c0451c6d7ab1306a7e141960c74
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 0.9871

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.online/app/431946152/huskybuckscom-free-robux-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-youtube_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_off00005268.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5268 31724 bytes
SHA-256: e91cc13d87166eb0dab943771ca8bbcf95fb45038b352b0ef58e03fbd454a052
font_01_sfnt_off00009ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC9 18624 bytes
SHA-256: f893a3bff8774b7ed5d4e22eaab63b6b5727efd4274e33d815ecbde6c17ee355

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