Malicious PDF — malware analysis report

Static analysis result for SHA-256 949ba58e7df53be2…

MALICIOUS

PDF

47.8 KB Created: 2021-06-09 06:00:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fce7cef67e3a415886781caa2fec1076 SHA-1: d6c876a56f026283acbd87a1bc22886f47405f76 SHA-256: 949ba58e7df53be24815728cd5aacc07d59857bd4e3236898f51cb66327cb5f5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm designed to attract users searching for game hacks or cheats. The primary URL points to a page titled 'roblox-superhero-tycoon-hack-script-pastebin-game-hack', indicating a lure for potentially malicious downloads. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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-superhero-tycoon-hack-script-pastebin-game-hack
    • http://force-seniorklub.dk/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdf
    • http://force-seniorklub.dk/images/free-tiktok-app_GM835599320.pdf
    • http://force-seniorklub.dk/images/coin-master-hacks-no-verification_GM406889139.pdf
    • http://force-seniorklub.dk/images/coin-master-free-spins-today-39_GM406889139.pdf
    • http://force-seniorklub.dk/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://force-seniorklub.dk/images/is-minecraft-dungeons-free_GM479516143.pdf
    • http://force-seniorklub.dk/images/free-robux-generator-no-verification_GM431946152.pdf
    • http://force-seniorklub.dk/images/make-your-own-minecraft-server-free_GM479516143.pdf
    • http://force-seniorklub.dk/images/how-to-get-free-robux-hack_GM431946152.pdf
    • http://force-seniorklub.dk/images/coin-master-free-coins-link_GM406889139.pdf
    • http://force-seniorklub.dk/images/coin-master-hack-uk_GM406889139.pdf
    • http://force-seniorklub.dk/images/robux-hack-website_GM431946152.pdf
    • http://force-seniorklub.dk/images/free-robux-only-username-no-human-verification_GM431946152.pdf
    • http://force-seniorklub.dk/images/coin-master-daily-free-spins-25_GM406889139.pdf
    • http://force-seniorklub.dk/images/roblox-adopt-me-free-pets_GM431946152.pdf
    • http://force-seniorklub.dk/images/get-free-food-in-coin-master_GM406889139.pdf
    • http://force-seniorklub.dk/images/coin-master-free-spins-fb_GM406889139.pdf
    • http://force-seniorklub.dk/images/free-tiktok-video_GM835599320.pdf
    • http://force-seniorklub.dk/images/roblox-font-free_GM431946152.pdf
    • http://force-seniorklub.dk/images/how-to-get-free-robux-on-pc_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005159.bin
d14eb3f6535527c9592059713bbf2fe3cd136c32fe6d3353fb63495a2bb115a5
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5159 25256 bytes
font_01_sfnt_off00008b87.bin
77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 2832 bytes
font_02_sfnt_off00009538.bin
2cb6cbc7416bc695c479b7edf4027c26ef7fb0f6020466a20e6f0fac9d74c8c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9538 19220 bytes