Malicious PDF — malware analysis report

Static analysis result for SHA-256 433798d7781f46ba…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 15:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ec475c5b69765a1f7fb031baf8a34979 SHA-1: e352c480dc864b3c409e88ef429e23062f9843f6 SHA-256: 433798d7781f46ba4e21877a76efc0c616b20ac0336222bf41fc1ee5ede3d31c
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 0.9980

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/free-roblox-csgo-codes-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-money-in-heists-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-earn-robux-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hacks-for-the-ledegendary-sword-rpg-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-rpg-games-to-steal-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-v-bucks_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-assassin-boxes-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-christmas-clothes-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-gift-card-codes-2021-september_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/pastebin-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-exploit-download_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-insta-arrest-hack-jailbreak-pastebin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/toolbox-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/truco-2021-hack-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-rs-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/mario-64-roblox-rom-hack-code_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
font_00_sfnt_off00003049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3049 22716 bytes
SHA-256: 5fc0b0767cbb20360e4ea36e04e2a71fdc701a8e2fc0110e06bea3906acd35fe
font_01_sfnt_off000062a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 18824 bytes
SHA-256: 008b1524655d8f0dfaa7d6e3648426848542bb53f92c98f6e032afe4acd3011d

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