Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5b7e26cfb81d46…

MALICIOUS

PDF

47.5 KB Created: 2021-06-13 15:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bccefae3967d82999385d85960acbd05 SHA-1: 1428ed2d8c176167a75667b24bd766183bd60ccb SHA-256: eb5b7e26cfb81d46304ee4227b9d06c7b8284384b650cce5a7379819e920ef4e
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a specific external URI, suggesting an attempt to redirect users to malicious content or applications. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or traffic generation, and the ML_NYX_PDF_MALICIOUS score further supports its malicious nature. The presence of a 'download' call-to-action phrase reinforces the malicious intent.

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 http://netcdn.co/app/431946152/free-beautiful-hair-roblox-game-hack
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-com-redeem_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/install-coin-master_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-headless-head-roblox_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/robux-free-codees-legit_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/robux-hack-generator_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-my-girlfriend-cheated-on-me_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-giveaway-2021-dot-tk_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-spin-and-coins-free_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-titanic-infinite-points-script-hack_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/pubg-uc-details_GM1330123889.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdf
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000516c.bin
08f6c9d03b646592470ddc62c6e8c3a84ca11498d665cf0a9a9d450ea4144fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x516C 25288 bytes
font_01_sfnt_off00008b60.bin
4889dc98a6bfd3c9244583f92387be58625a91e7a969778ad35ada89b27ed636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B60 3084 bytes
font_02_sfnt_off00009606.bin
05aa172ef180d9c8471139ce9b6bdf5e04b66ae535cb4bd3b934099055a993ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9606 18540 bytes

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