Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f53fd6d3915b43…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 13:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a04e69594e74d7adff746ae9b508b39b SHA-1: 5c3181edd843a0c0e4f8155fb83611ffe358c2f1 SHA-256: 69f53fd6d3915b437f5690eda6f5d8e4ba6505e6306adabdb629b168c49f7967
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a call-to-action phrase, directing users to websites that appear to be part of a scam or phishing operation related to in-game currency. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a coordinated effort to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the structure and embedded links strongly suggest a malicious intent to deceive users.

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/431946152/earn-free-robux-today-game-hack
    • https://ibelive.com.tw/image/data/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/free-robux-kid-friendly_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/roblox-games-with-free-vip-servers_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/coin-master-hack-2021_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/can-i-get-robux-for-free_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/free-robux-com-roblox_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/free-spins-on-coin-master-cheat_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/free-robux-sites-2021_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/coin-master-free-spins-hack-link_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/unlimited-spin-coin-master-hack_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/50-free-spins-coin-master-links_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/coin-master-real-free-spins_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/minecraft-pe-server-hosting-free_GM479516143.pdf
    • https://ibelive.com.tw/image/data/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/my-minecraft-account-was-hacked_GM479516143.pdf
    • https://ibelive.com.tw/image/data/files/free-roblox-accounts-generator_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/get-me-free-robux_GM431946152.pdf
    • https://ibelive.com.tw/image/data/files/free-coin-master-cards_GM406889139.pdf
    • https://ibelive.com.tw/image/data/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f0.bin
74754e4a7924ac10b4cd96aacc6bb5ca63ea44a710bf2d8d8842f998aa69c1d8
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F0 25220 bytes
font_01_sfnt_off00008311.bin
856adb635f1df42b1ab7aec7f905735c2cb2dfebd4088312a1c80dc48447787c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8311 18596 bytes