Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee59d69564724a5…

MALICIOUS

PDF

47.0 KB Created: 2021-05-17 06:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 171c04d26087ccfda2a4eaed408fcb45 SHA-1: dbe1aba37e22c10717368c62d9c0b79e3dbb93f6 SHA-256: 4ee59d69564724a5bc46f877f0cb0d0e73e019b494d63bfa944efbb811e21f2d
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are related to game hacks and cheats, indicating a lure for advance-fee scams or redirection to malicious content. The heuristic 'PDF_SEO_LINK_FARM' and 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggest this malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content point towards a phishing or scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.xyz/app/431946152/www-roblox-robux-game-hack
    • http://www.studiomilone.net/images/coin-master-invite-friends-hack_GM406889139.pdf
    • http://www.studiomilone.net/images/free-robux-website_GM431946152.pdf
    • http://www.studiomilone.net/images/free-robux-hack-generator_GM431946152.pdf
    • http://www.studiomilone.net/images/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://www.studiomilone.net/images/free-roblox-accounts-with-robux_GM431946152.pdf
    • http://www.studiomilone.net/images/free-rare-cards-for-coin-master_GM406889139.pdf
    • http://www.studiomilone.net/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
    • http://www.studiomilone.net/images/coin-master-free-spins-only_GM406889139.pdf
    • http://www.studiomilone.net/images/how-can-i-get-free-robux_GM431946152.pdf
    • http://www.studiomilone.net/images/doctor-louie-roblox_GM431946152.pdf
    • http://www.studiomilone.net/images/spin-coin-master_GM406889139.pdf
    • http://www.studiomilone.net/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://www.studiomilone.net/images/how-to-make-robux-on-roblox_GM431946152.pdf
    • http://www.studiomilone.net/images/how-to-hack-someones-minecraft-account_GM479516143.pdf
    • http://www.studiomilone.net/images/robux-free-c_GM431946152.pdf
    • http://www.studiomilone.net/images/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://www.studiomilone.net/images/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
    • http://www.studiomilone.net/images/minecraft-java-edition-free-download-for-android_GM479516143.pdf
    • http://www.studiomilone.net/images/coin-master-hack-extension_GM406889139.pdf
    • http://www.studiomilone.net/images/coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cb5.bin
c6f2747c30a27fb2547c54d6ba4cd8303d70741d52141f5163206483738c1988		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB5 25780 bytes
font_01_sfnt_off000088c2.bin
8e24205afdd13dcdea98f8150ef77dee4030e0e50a7c748783d1b4598e034a20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C2 3464 bytes
font_02_sfnt_off000094f8.bin
78b116fa1ee868f0b0d7434088deeaef50c2dd7920df139fcc6e1eb836a1517c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94F8 18284 bytes

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