Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e54f922b0df5098…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 23:48:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bce22250b5b1b50e575fe3f0ce0ae35f SHA-1: 7b276610acbd2d05d53a61ab43a7b267baafa8f0 SHA-256: 6e54f922b0df50986e9d4d493fff8ee5839df4c0292f73be1f3c43a7ce647128
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, suggesting it is designed to redirect users to external sites. The primary URL, http://netcdn.tw/app/406889139/spin-coin-game-hack, indicates a lure for game hacks or cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic further supports a malicious workflow. No scripts were extracted, but the extensive link farm and external URI firings point to a phishing or content-luring attack.

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/406889139/spin-coin-game-hack
    • https://ambasador.md/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-roblox-in-epping_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/free-free-robux_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-robux-sign-up_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-do-you-get-robux-for-free-2021_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-roblox-protosmasher-whitlist-code-free_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/minecraft-112-hacked-client_GM479516143.pdf
    • https://ambasador.md/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdf
    • https://ambasador.md/ckfinder/userfiles/files/changing-script-to-make-stuff-free-on-roblox_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-someone-roblox-2021_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/minecraft-free-download-mac_GM479516143.pdf
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-hack-uk_GM406889139.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-hack-lost-world-2021_GM406889139.pdf
    • https://ambasador.md/ckfinder/userfiles/files/free-robux-games_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/free-printable-roblox-coloring-pages_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/free-roblox-exploit-no-crash_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-penguin-costume-on-roblox_GM431946152.pdf
    • https://ambasador.md/ckfinder/userfiles/files/free-minecraft-printables-food-labels_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031de.bin
a449bec61dd47cc25e2392c6c3d1a4f4fb8c9cb66e6ad2c2164bec5da54bc307		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DE 23204 bytes
font_01_sfnt_off0000663c.bin
b68420fea77245169a4148fb81a2a69b43defff413f27b9c268d76ec53e932b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663C 17908 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.