Malicious PDF — malware analysis report

Static analysis result for SHA-256 24de7da4d486f8c8…

MALICIOUS

PDF

35.4 KB Created: 2021-07-10 01:00:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c688f757986410610616877673358c72 SHA-1: 16b2ab69fa5365f3c2cfd2001d4f30939431faa9 SHA-256: 24de7da4d486f8c8ba01146ce75fcbe6d8da5cc84616d321f4ab69b80f1c6ea6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic, pointing to websites offering free in-game currency and hacks. The document body includes phrases like 'Haktuts 2021 Coin Master Free Spin Link' and numerous URLs related to 'robux' and 'coin master', suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

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/haktuts-2021-coin-master-free-spin-link-game-hack
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-get-free-robux-in-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/game-roblox-online-free_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-hack-download-pc-dungeon_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-email-rewards-link_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-speed-hack-on-roblox-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/pastebin-roblox-hack_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-hack-to-get-robux-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-vip-servers-for-roblox-jailbreak-2021_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-hack-robux-inspect_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/roblox-no-download-hack_GM431946152.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-minecraft-java-edition-account_GM479516143.pdf
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-become-hacker-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003166.bin
7a6306d2fcc1ff1f1c44591c56c765067fc34fc1a6fb7ea6b28f34468e378b1b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3166 23216 bytes
stream_003_off000065bd.bin
7fbaae8c74c80ad8c6004c185d9f2f033924c4f14cdb292a6e337190a643b689		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x65BD 18884 bytes

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