Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd0b0d3304ec0df…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 08:43:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6f228ac7e63811e0ccf22533eb56fe9b SHA-1: 6d6095139aee8f907c542c2b6e93cde8bcab785e SHA-256: 5fd0b0d3304ec0df1725a7201d80c9ae74043ed21cdc7106dd424cb5a1bc36c1
102 Risk Score

Malware Insights

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

This PDF document contains numerous links, identified by the PDF_SEO_LINK_FARM heuristic, that lead to websites promising free game currency or hacks. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a call-to-action phrase further supports a malicious intent. The document likely serves as a lure to direct users to potentially malicious websites for phishing or malware distribution.

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.tw/app/431946152/free-robux-websites-2021-game-hack
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-giveaway-top-hack_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/get-free-coins-on-coin-master_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-free-roblox_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-free-spins-reddit_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/can-robux-hacks-ruin-your-computer_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox36com-free-robux_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-generator-with-group_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-free-accounts-with-robux_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-lumber-tycoon-2-grief-hack_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-roblox-fr-jailbreak-fr_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/can-you-actually-get-free-robux_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/100-free-spins-coin-master_GM406889139.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-code-free-robux_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-fly-hack-cheat-engine-2021_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-gift-card-codes_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-de-roblox-booga-booga_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-hack-999999-robux-movil_GM431946152.pdf
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-royale-high-cheats-for-diamonds-2021-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030a5.bin
a65533c1ada5b8c94f094dee5781700d07496a8f3f70c7a5d9d7018bdced6cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30A5 22044 bytes
font_01_sfnt_off00006173.bin
7dbc8426627c63cb62956a50d2295124057d24afa4e6276b198320b3de5f5879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 19540 bytes

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