Malicious PDF — malware analysis report

Static analysis result for SHA-256 218a7eb296111e6a…

MALICIOUS

PDF

36.3 KB Created: 2021-07-04 10:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4e30f641153af0e04694ed8cc59bf422 SHA-1: e7092a3fbcd3b5aa8162596c072de1f1f139f1f7 SHA-256: 218a7eb296111e6ab151474fbb2ea8a70ce5d0d014ee96501d4e37427310ec03
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game hacks and free currency, indicating a link farm designed to attract users. The presence of a direct URL to netcdn.tw suggests an attempt to deliver a payload or redirect users to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristics strongly suggest a malicious intent to lure users to external resources.

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-30-days-old-roblox-accounts-game-hack
    • https://library.itn.ac.id/perpusitn/repository/how-to-steal-hack-anyones-roblox-account_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-robux-easy_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/hackear-roblox-con-lucky-patcher_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-robux-obc-codes_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-app-download_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-can-you-get-free-robux_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/coin-master-real-free-spins_GM406889139.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-accounts-2021-payed_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-dll-hack-352021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/minecraft-games-free-to-play-online_GM479516143.pdf
    • https://library.itn.ac.id/perpusitn/repository/robux-hack-no-verification-human_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-emotes-in-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-prison-life-hack-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-spongebob-shirt-free_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/5-roblox-games-that-give-free-robux-working_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/roblox-royale-high-cheats-for-diamonds-november-2021_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-for-real_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-somebody-in-roblox_GM431946152.pdf
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-on-roblox-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003456.bin
460e1c465b411767990e69a836ca82861dc29109ece5898d02d379327549b3d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3456 22660 bytes
font_01_sfnt_off00006725.bin
ffab2da769d6ea8ac3875c4d940888898ba33b97c87efc7dfffde0221505c70d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 19576 bytes

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