Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29b66fa0c7bf670…

MALICIOUS

PDF

48.6 KB Created: 2021-06-03 06:53:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a80526d208181918792c4292427c181c SHA-1: c40a17e59ffcc7d2d1651b6b5979db56f7be0820 SHA-256: f29b66fa0c7bf670af370d03fc45b1973393d19b45de7e4410a5e5df68be624a
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 0.9796

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/479516143/free-minecraft-addons-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/master-coin-free_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/tiktok-free-pizza_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cone-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-4l-tiktok_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000526d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x526D 29300 bytes
SHA-256: 3b96d98048194bcf1d81f60df28bb3745170b4b8757a62e46c67f0201a5ae833
font_01_sfnt_off000092d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D5 2840 bytes
SHA-256: 20e88e247102f07c6a70b4d36c7da419714b68793fc4cb00c42292950da9c9bb
font_02_sfnt_off00009c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C92 17884 bytes
SHA-256: 2acb4cd1bca1b5a723691e5edbd5eaf48ec188cda9d27986775bd20f5f6dc65a

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