Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2701da9372e70ac…

MALICIOUS

PDF

35.8 KB Created: 2021-07-07 19:29:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cd15e9516355688d42738ceb970bd327 SHA-1: c8b58f6bb58778b17e9f9e998e01a17b96f40b2a SHA-256: e2701da9372e70ac9060369108dc6d1f914a6851dc22844ac409d8ff5fabe99a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on a domain associated with SEO link farming and appear to offer game hacks or cheats. The document body explicitly mentions 'how-to-get-free-robux' and includes a direct URL to a potential download. The ML classifier strongly indicates maliciousness, and the overall structure suggests a lure to download potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/431946152/how-to-get-free-robux-no-verification-2021-game-hack
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/roblox-weight-lift-sim-3-hack_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hack-roblox-promo-codes_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/download-hacked-games-coin-master_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/roblox-pet-simulator-how-to-get-hacked-pets_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-insert-lua-script-into-roblox-using-cheat-engine_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/robux-gratuit-no-hack_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-website_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hack-roblox-with-developer-tools-in-game_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-thumbnail_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-gold-cards-hack_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-links-for-coin-master_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-hack-2021_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hack-mad-city-roblox-easy_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-stuff-in-roblox-2021_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-use-cheat-engine-on-roblox-without-shutdown-2021_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-paid-roblox-games-for-free_GM431946152.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdf
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-20-free-spins-link-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003444.bin
a715fbdb5a62f7d71f9ef7469433d00d3864b7f67edeb8f89cd3503173018788		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3444 22132 bytes
font_01_sfnt_off00006522.bin
daa201838bdbf48b85e104a71e58172e46eb57685cc2d98453f7e8ceecfd16ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6522 19640 bytes

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