Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c1a5b19467e4901…

MALICIOUS

PDF

51.5 KB Created: 2021-06-11 12:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 330069c92c8e478011daf12360cb9149 SHA-1: 1c9e7544b57a22f587b216a1a4cc49980096099e SHA-256: 9c1a5b19467e4901bb07d2e4ab32f20027e31068b20905fa38de8df9f0d6fbc7
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 structured as SEO-optimized PDF links, suggesting a link farm. The primary URL points to a resource related to 'Roblox Fe Btools Script Hack', indicating a lure for game cheats or exploits. The presence of a 'Download Button' heuristic further supports the malicious intent of directing users to download content. No scripts were extracted, but the overall structure and linked content suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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.tw/app/431946152/roblox-fe-btools-script-hack-game-hack
    • http://lawpatron.ru/images/free-spins-on-coin-master-2021-ios_GM406889139.pdf
    • http://lawpatron.ru/images/how-to-get-java-minecraft-free_GM479516143.pdf
    • http://lawpatron.ru/images/how-do-you-install-minecraft-for-free_GM479516143.pdf
    • http://lawpatron.ru/images/how-to-get-free-robux-com_GM431946152.pdf
    • http://lawpatron.ru/images/free-robux-pastebin_GM431946152.pdf
    • http://lawpatron.ru/images/free-robux-promo-codes-2021_GM431946152.pdf
    • http://lawpatron.ru/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://lawpatron.ru/images/roblox-hack-unlimited-robux_GM431946152.pdf
    • http://lawpatron.ru/images/free-spins-on-coin-master-link_GM406889139.pdf
    • http://lawpatron.ru/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://lawpatron.ru/images/coin-master-game-android-free-download_GM406889139.pdf
    • http://lawpatron.ru/images/coin-master-hack-apk-2021_GM406889139.pdf
    • http://lawpatron.ru/images/roblox-obby-that-gives-you-free-robux_GM431946152.pdf
    • http://lawpatron.ru/images/earn-robux-sites_GM431946152.pdf
    • http://lawpatron.ru/images/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://lawpatron.ru/images/hack-master-coin_GM406889139.pdf
    • http://lawpatron.ru/images/coin-master-daily-link_GM406889139.pdf
    • http://lawpatron.ru/images/coin-master-exchange-40-free-spins_GM406889139.pdf
    • http://lawpatron.ru/images/coin-master-400-spin-link-today_GM406889139.pdf
    • http://lawpatron.ru/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f55.bin
2ce1c1a8297ab7a056464b5846a7f134e7d856e15f25852039669fa9300dcae0
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F55 39372 bytes
font_01_sfnt_off0000a5df.bin
a3b32e39b510aeb4d15db6ec69dc925f4aac149f668d8fc9d9d9e0592dd9030d
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5DF 18748 bytes