Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc37297e19128da…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 17:46:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6fa1bffcde37dc9ce0e9dde6fff7f5d5 SHA-1: d9e4fa5db74652df7abc82bd8597b3be6569d914 SHA-256: ddc37297e19128da5e7a018b2bd57ceeeb4f72584eeeb38b2c73c0585bff0acb
102 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs and a document body that mimics a "codes for Roblox" generator, aiming to trick users into clicking malicious links. The heuristic firings, particularly PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, strongly indicate malicious intent. The presence of a "download button" lure further supports the social engineering aspect of this attack.

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/codes-for-roblox-tycoon-to-get-free-gems-game-hack
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-and-coins-generator_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-coins-spins_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-money-hack-tool_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-inspect-element-cheat-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-speed-hacks-that-work_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-generator-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-blogspot_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-roblox-parris-island_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-money-cheat-engine_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/scp-lockdown-roblox-game-cheats_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/hack-roblox-lumber-tycoon-2-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-how-to-get-robux-hack-no-scam_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000308f.bin
3e3bfa948da97e3ee2688c5ca5efba2c86905522ab9fc4dd10728f31e10360e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x308F 22464 bytes
font_01_sfnt_off000062ba.bin
b5deb101df6b7ea00211acf0656220216f297bc007035ba23801ed9c8386d065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BA 19368 bytes

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