Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75207ffa45ad341…

MALICIOUS

PDF

44.5 KB Created: 2021-05-12 00:09:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cdf9442a54778cc915bb7179ebb7ed52 SHA-1: fc171142427ae69a87555ab73cdc8ff084a82c7d SHA-256: e75207ffa45ad34115d474bb6da451f27e594a88115cf0f4ea541be986f9f692
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on `taxiaparis.fr` and appear to be part of a link farm designed to attract users searching for game cheats and free currency. The primary URL `https://netcdn.xyz/app/431946152/instantrobux-game-hack` suggests a direct download or exploit attempt. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure further supports a malicious intent to trick users into downloading unwanted or harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/431946152/instantrobux-game-hack
    • http://www.taxiaparis.fr/images/roblox-com-free-robux_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-hack-tool-pc_GM406889139.pdf
    • http://www.taxiaparis.fr/images/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://www.taxiaparis.fr/images/roblox-adopt-me-hack_GM431946152.pdf
    • http://www.taxiaparis.fr/images/how-to-get-free-pet-food-on-coin-master_GM406889139.pdf
    • http://www.taxiaparis.fr/images/free-minecraft-coloring-pages_GM479516143.pdf
    • http://www.taxiaparis.fr/images/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-free-download-for-pc_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-to-get-100-robux-for-free_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-hack-2021_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-to-get-free-coins-for-coin-master_GM406889139.pdf
    • http://www.taxiaparis.fr/images/ways-to-get-free-robux_GM431946152.pdf
    • http://www.taxiaparis.fr/images/how-to-get-free-coins-in-minecraft_GM479516143.pdf
    • http://www.taxiaparis.fr/images/can-i-get-robux-for-free_GM431946152.pdf
    • http://www.taxiaparis.fr/images/robux-converter_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-card-link-coin-master_GM406889139.pdf
    • http://www.taxiaparis.fr/images/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-working-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049db.bin
3f2efeb40f09271cb84c3d4d40813614ad64f864870def18642ad88e082aef2a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DB 24404 bytes
font_01_sfnt_off000081b2.bin
77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x81B2 2832 bytes
font_02_sfnt_off00008b63.bin
4d77632c85c001e266779ad9698d54220e11b78bd17d8b0f085f3dc4dd17180b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B63 18184 bytes