Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed5e089299a26ab…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 03:10:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5cf798474f34d31952b5ce948547a407 SHA-1: d591a9099c4a23951cfb5eb4ae19a03a2d5bbef0 SHA-256: 9ed5e089299a26ab2f32fae3251528cfb7441458179c52bb8f03145a063bb0a2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, that lead to websites promising free in-game items and hacks. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. The document body and extracted URLs suggest a scam aimed at users seeking advantages in games, likely leading to malware downloads or phishing sites.

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-earn-free-roblox-game-hack
    • http://elib-s2.ubl.ac.id/repository/best-roblox-jailbreak-hack-2021-mod-menu-level-5_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/download-roblox-for-free-and-let-me-play_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/cheap-robux-scam-free_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-in-2-mins_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdf
    • http://elib-s2.ubl.ac.id/repository/free-executor-download-roblox_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-minecraft-for-kids_GM479516143.pdf
    • http://elib-s2.ubl.ac.id/repository/does-cheat-engine-inject-scripts-into-roblox_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-roblox-with-synapse_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-play-free-without-downloading_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-free-hair-promo-codes-2021_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-font-download-free_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-teleport-in-roblox_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-codes-for-roblox-trade-hangout_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/eyes-the-horror-game-update-2-alpha-hack-roblox_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdf
    • http://elib-s2.ubl.ac.id/repository/free-roblox-accounts-no-pin-2021_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-robux-only-1-step_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031fa.bin
b34e4da2a72313b3d26567515ba324948343854ad8a5f4aee181a833b8e76a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 22808 bytes
font_01_sfnt_off00006524.bin
d31a839b8b2bab8efa35519a81ecba1fa1fbccc002480c79e1b1d257119067cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6524 18812 bytes

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