Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe252a53c70547e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 15:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 93d8ca376350c67379cbfb9fac2a90f3 SHA-1: 4920144314b363ea326b577b7a2bfca9421b87db SHA-256: fbe252a53c70547ef780c0ce447d56b898c22b2451dd664d9db92a1ad448b909
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document contains numerous embedded links and a document body that promotes free in-game currency and hacks for popular games like Coin Master and Roblox. The presence of a large number of external links, many with numeric slugs, suggests a link farm designed to attract users searching for cheats. The ML classifier strongly flagged this PDF as malicious, and the overall structure indicates it's likely a lure to drive-by 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.tw/app/406889139/unlimited-coin-master-free-spins-game-hack
    • http://library.itekes-bali.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-easy-no-download-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-do-i-get-robux-for-free-in-a-iphone_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-guess-the-emoji-cheats_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/javascript-hack-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-flood-escape-hack-script_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/synapse-roblox-hack-ddl_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-wild-savannah-hacks_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-redeem-code-free-2021_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/robux-generator-without-verification_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-sign-in-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-links-for-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-spin-codes-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-cards-hack-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003082.bin
1a3c4871971a881466411278913ca4f3bc7daadfd61b748137139b1326aca38b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3082 22796 bytes
font_01_sfnt_off00006392.bin
2614a93aa226769b9bcda9f2b70c854a7220d675dfa99f6f802674302d402f76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 18868 bytes

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