Malicious PDF — malware analysis report

Static analysis result for SHA-256 8529e9c26d23e0ba…

MALICIOUS

PDF

36.0 KB Created: 2021-06-25 04:27:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4d4eeca23c8c4a973d7bae254501a784 SHA-1: 228c031320bdcfbd38905a2e464f1d0619ad5546 SHA-256: 8529e9c26d23e0ba9260151d1b70931b294fcfb6cfc759244a8514033708af2f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links and a specific URL related to hacking game accounts and obtaining in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to distribute malicious content or phishing pages. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/how-to-hack-roblox-accounts-in-game-with-rc7-game-hack
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/buy-tiktok-followers-free_GM835599320.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-roblox-accounts-with-bc-list_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/minecraft-account-hacked_GM479516143.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-robux-obby-no-password-2021_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-spins-and-coins-coin-master_GM406889139.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/tiniest-roblox-avatr-with-free-items_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/hack-engines-for-roblox-swordburst-2_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-memeber-roblox_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/robux-hack-v6-5_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-lost-game-hack-script_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/www-free-robux-hack_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/can-i-make-a-roblox-group-for-free_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-robux-generator-2021-no-scam_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/free-account-in-roblox-password-and-username_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-robux-hack-no-download-2021_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/how-to-hack-a-youtuber-on-roblox_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/how-to-hack-coin-master_GM406889139.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-how-to-get-free-robux-on-free-robux-2021_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/hackear-roblox-robux-gratis_GM431946152.pdf
    • https://srmap.edu.in/wp-content/uploads/fsqm-files/roblox-4all-cool-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000322c.bin
9030811a2439a80c3ece4644cccb125bf7dda1b072426df2b1d0657d5d445359
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x322C 22736 bytes
font_01_sfnt_off00006530.bin
10bc1a6f7af4c2f6389740ced4cc2149ca3427995e71b315759a560667aeb770
pdf-font-stream PDF embedded font (sfnt) at offset 0x6530 19864 bytes