Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb66836a058974a…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 14:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e2f3defe3fda11d8c9393e389c964aec SHA-1: 9a9e32ef522a47a7df68cef7c3657d9bdc2b2efa SHA-256: 9eb66836a058974a5ce0eef402e12dd013f4f1e4c298cc68a0597fd2e54a9ff7
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 0.9865

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/406889139/free-coins-for-flip-master-online-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-skins-download-free_GM479516143.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_off0000535c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x535C 24140 bytes
SHA-256: f55ccb80a0c4149dd0e7161604136f5a559b3f12b009c34be2ed44ef4835b124
font_01_sfnt_off00008aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA9 17960 bytes
SHA-256: b8276a24b9e111d30e0b115559c7a2e7144cbebc25d18c1e5fb7b20d8e0a0542

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