Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20c027af63fbd83…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 02:43:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9c0fca7231bdece793aec1158db710f4 SHA-1: 918d4bf4f54708b8ad4961e39eb0637844c7386f SHA-256: d20c027af63fbd83ac2339f521611cd7f455e8137f70cd6cf28f5b10ea11c0c4
102 Risk Score

Malware Insights

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

This PDF was flagged by an ML classifier as malicious and contains a large number of external links, many of which are related to game hacks and cheats. The document body also contains a direct link to a suspicious URL, suggesting a phishing or malware distribution attempt. The presence of a "download button" heuristic further supports the intent to trick users into downloading malicious content.

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/shirt-for-roblox-free-game-hack
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-coin-master-spins-no-verification_GM406889139.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/websites-that-give-you-free-robux_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-no-verify-2021_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/roblox-robux-generator-tool_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/robux-online_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-codes-2021_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-rewards_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-coin-master-spin-app_GM406889139.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-promo-codes_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/free-robux-hack-us_GM431946152.pdf
    • http://lib.smpn1bambanglipuro.sch.id/repository/http-blackgamesus-coinmasterhack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003266.bin
0f7c2da87f8d3dfe7efde65a7f883d82eadba983331ec5b821daa23b8ffbfd30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3266 22448 bytes
font_01_sfnt_off00006472.bin
7cf2ff7f71d607e626633c7129896c630b04a4f1725bc3d75b318b2313f18711		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6472 18856 bytes

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