Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb3d31f5351ec92…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 15:12:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 57eb2d3422035b97c73de40a7e3edd08 SHA-1: 620cac9e93834aa33232e1d23567831636fc9dc9 SHA-256: 9bb3d31f5351ec923b2b0882ed4ea0b3e87242c593ba8521f33595bc303faf27
102 Risk Score

Malware Insights

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

This PDF document contains numerous links, presented as a link farm, that direct users to websites offering game hacks and free in-game currency. The presence of a visual download button and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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/479516143/how-to-get-hacks-on-minecraft-game-hack
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/undetectable-cheat-engine-roblox_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/orewards-com-free-robux_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/an-app-that-gives-you-free-robux_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hack-no-verification-no-survey_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-walk-through-walls-hack-2021_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-clothes-for-roblox-avatar_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/get-robux_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-super-checkpoint-cheat-codes_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/hackear-coin-master-sin-verificacion_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spin-link_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-facebook_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-uk_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/wurst-client-download_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/super-striker-league-roblox-hack_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spin-coin-master-hacktoman_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-4-all-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003338.bin
4a5e40141f73aea869cdc12bb886fa137bb3c22839cdfe02608063b66c9ec249		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3338 22264 bytes
font_01_sfnt_off000064b6.bin
7074210b4cd1020dcfe52daa4947dc8d4893434919d69b6619189279454e1a4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 18332 bytes

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