Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae9879aeff23fc3…

MALICIOUS

PDF

47.0 KB Created: 2021-06-11 03:12:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ae7ebbd20378e1bc56c895fab8503d6f SHA-1: a0d4f78c46b7453c1c2bf43fcf0d104d03bdec3d SHA-256: fae9879aeff23fc3189e68f0d5a9afa34f12ebf24914a2d0aa75b6ea0a1c2712
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF link farms. The document body and extracted URLs suggest a lure related to game hacks and free in-game currency, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/roblox-shuts-down-when-i-open-cheat-engine-game-hack
    • http://libsmpn1balongpo.sch.id/repository/roblox-online-play-hack-for-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/claim-free-robux-button_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/fishing-glitch-gives-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-online-hack_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-apk-2021-ios_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/cm-free-spins_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-coins_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-spin-generator_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/websites-that-give-you-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-realme-products_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-roblox-players-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-roblox-money_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/collect-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056ab.bin
e14bf3b776bdff8c50d5cfdbe31a8f8b218f5178c3ad9c1f21ba5287d753b3e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56AB 25520 bytes
font_01_sfnt_off0000914c.bin
128cc96257d7fe3192cf60000ea5c444231d0ab4a0b8d724b1bb9e7d8b369242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x914C 19536 bytes

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