Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72100949c6a8dd3…

MALICIOUS

PDF

35.5 KB Created: 2021-06-18 07:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d55f766e1cdd3603bcfe384af7e4eeec SHA-1: ecd8576c51f0b758a2a47b0efe38ae6f75d98e6f SHA-256: d72100949c6a8dd3a33b6874b8cff498d33cff7601dcfb3ddb7da101c8bd09d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, with a primary lure pointing to a 'game hack' generator. This heuristic, combined with the ML classifier, strongly suggests a malicious intent to redirect users to potentially harmful content or initiate a download. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering tactic to trick users into clicking malicious links.

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.co/app/431946152/hacks-master-keys-dungeon-shooter-roblox-game-hack PDF link annotation
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/pubg-uc-ykleme-bedava_GM1330123889.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/what-is-the-best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-the-pizzeria-rp-remastered-give-all-coins-hack-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/get-free-robux-by-watching-videos_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/undertale-survive-the-monster-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-daily-free-spins-link-today-2021_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_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22676 bytes
SHA-256: e4afe285cbf60a29f4ca186830703b856530cf85672b6aeb4e45b1751c4ae90c
font_01_sfnt_off000063e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E4 19612 bytes
SHA-256: 5fc1ddd4fece9552eee9ab5ba96c484b466d5dea7590dccbb826f26ca9366ad3

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