Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09f75f3f65608c3…

MALICIOUS

PDF

34.5 KB Created: 2021-06-25 13:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c0f15a4299b9acb8df5dee362ad148ac SHA-1: 0936ff8442a5b748d484d187cbe2e66353499dba SHA-256: f09f75f3f65608c3d433372e1ed6aabdb0de93cdf6ecd008fcb242c5a7fd9745
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 links for game hacks and cheats. The document body explicitly mentions 'Free 500 Robux' and includes a URL pointing to a potential application download. This suggests the document is designed to trick users into downloading a malicious application by promising in-game rewards.

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.co/app/431946152/free-500-robux-game-hack
    • http://opac.disarpus.surakarta.go.id/repository/free-spins-for-coin-master-ios_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/free-tix-and-robux-no-download_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/shirt-codes-for-roblox-free-shipping_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-2021-ios_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/roblox-hack-2021-robux_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/can-you-hack-robux-using-promo-code-inspect-element_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-homepage_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/girl-roblox-avatar_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-account-and-password-2021_GM479516143.pdf
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-coins-spins_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-roblox-real_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/lastrick-com-coin-master-hack_GM406889139.pdf
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-premium_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/homo-jews-hacking-for-roblox_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/roblox-hack-august-2021_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-com-no-verification_GM431946152.pdf
    • http://opac.disarpus.surakarta.go.id/repository/roblox-destruction-simulator-hack-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_off00002ff3.bin
a04745f683103c0af233fdf6fc2782d402b491115b3fb936a04672b853971afc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF3 22340 bytes
font_01_sfnt_off000061e4.bin
6eb89228a084df29320e45b86004d4f55cef258b095cfc8c6a604d7700f964f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E4 19024 bytes

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