Malicious PDF — malware analysis report

Static analysis result for SHA-256 50eda38f2e6f82fe…

MALICIOUS

PDF

42.0 KB Created: 2021-05-18 03:45:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6088c61bfd744a827b3eb34261ed4043 SHA-1: ba6ff0e68be04ab75d3c4a4e426f02763d342d41 SHA-256: 50eda38f2e6f82fe8cb09f29fd4b3c74ad41b51ac74b0f6d2eb1d9df20bc7709
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which point to websites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent. The document likely serves as a link farm to distribute malware or facilitate phishing by directing users to potentially compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-spins-and-coins-today-game-hack
    • http://www.sapaengineering.kz/images/how-to-hack-coin-master-using-es-file_GM406889139.pdf
    • http://www.sapaengineering.kz/images/free-spins-for-coin-master_GM406889139.pdf
    • http://www.sapaengineering.kz/images/minecraft-thumbnail-maker-free_GM479516143.pdf
    • http://www.sapaengineering.kz/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdf
    • http://www.sapaengineering.kz/images/http-bit-ly-coin-master-hack_GM406889139.pdf
    • http://www.sapaengineering.kz/images/roblox-gift-card-for-free_GM431946152.pdf
    • http://www.sapaengineering.kz/images/moon-active-games_GM406889139.pdf
    • http://www.sapaengineering.kz/images/united-gaming-net-coin-master-hack_GM406889139.pdf
    • http://www.sapaengineering.kz/images/how-do-you-get-free-roblox_GM431946152.pdf
    • http://www.sapaengineering.kz/images/how-to-get-hacks-on-roblox_GM431946152.pdf
    • http://www.sapaengineering.kz/images/roblox-jailbreak-hack_GM431946152.pdf
    • http://www.sapaengineering.kz/images/free-card-link-coin-master_GM406889139.pdf
    • http://www.sapaengineering.kz/images/coin-master-free-spins-link-october-2021_GM406889139.pdf
    • http://www.sapaengineering.kz/images/roblox-girl-avatar_GM431946152.pdf
    • http://www.sapaengineering.kz/images/easy-robux-today-com_GM431946152.pdf
    • http://www.sapaengineering.kz/images/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://www.sapaengineering.kz/images/minecraft-java-edition-free_GM479516143.pdf
    • http://www.sapaengineering.kz/images/coin-master-free-spins-through-coin-pop_GM406889139.pdf
    • http://www.sapaengineering.kz/images/free-coin-master-spins-hack_GM406889139.pdf
    • http://www.sapaengineering.kz/images/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004959.bin
38089e0d25fe81b7c5191aa07e3ff330d6f8654f87d98d167231bec014261ac1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4959 25156 bytes
font_01_sfnt_off000081cb.bin
3719491a9c8fefeea03f68de14e56d93a4ff097dba5adf71ae2e44f224446be6
pdf-font-stream PDF embedded font (sfnt) at offset 0x81CB 18240 bytes