Malicious PDF — malware analysis report

Static analysis result for SHA-256 70aedf667d1d9471…

MALICIOUS

PDF

35.6 KB Created: 2021-06-19 16:20:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6a09c872cdb8056425b3ad28c25790b8 SHA-1: 9aa8c041e9f9edb7dcf1da852b40f5394549f21a SHA-256: 70aedf667d1d94713b5138188b076fbf784ef2ec2ae5b1ca50c66e3f4a93c896
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 presented as guides for game hacks (Roblox, Coin Master). The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these external links, suggesting a link farm designed to attract traffic or distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure strongly suggest an attempt to redirect users to malicious sites for downloading further malware or engaging in scams.

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/hacks-para-dungeon-quest-roblox-2021-game-hack
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-june-2021_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/hacking-into-ldshadowladys-roblox-account_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-robux-glitch_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-hack-spin-generator-tool_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/minecraft-svg-free_GM479516143.pdf
    • https://digilib.stieama.ac.id/repository/new-roblox-hack-zombie-rush_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/how-do-you-earn-robux_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/robux-prices_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-june-2021_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/all-client-roblox-hack-script_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-accounts-2021-with-wireshark_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/how-to-get-any-free-catalog-item-in-roblox-zombierule_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/free-roblox-gift-cards-that-can-be-used-unlimited-times_GM431946152.pdf
    • https://digilib.stieama.ac.id/repository/tiktok-free-like-bot_GM835599320.pdf
    • https://digilib.stieama.ac.id/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdf
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003167.bin
b6a855c879a43fe5e5ff696112d8e8023dcc9ba3c0e0786ad14fa200bf5a2f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3167 22520 bytes
font_01_sfnt_off00006389.bin
62293c63c957fb3ce15451bf0d4bf269b6e9b6d4b6d91c5d5118e0324a9edca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6389 19784 bytes

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