Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c4fba1626b5371…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 09:22:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 01aaabe3fe52be0d7105341bbd7c04bf SHA-1: a1ace5bf13bf36bc175cb1f6bc87e89fb54062c9 SHA-256: 32c4fba1626b5371dda2bdfa426cf3b29e6fc4bd15306b8942ade15690cc1555
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to game-related hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the 'ML_NYX_PDF_MALICIOUS' model strongly flagged the file. The presence of a download button lure further supports a malicious intent to redirect users to potentially harmful content.

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/glitch-free-items-roblox-game-hack
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-hack-data-explorer-blox-no-hero-academia_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-hack-me-robux_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-place-view-bot-hack-forums_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-get-25-robux-for-free_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-generator-with-roblox-quiz_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/robux-hack-no-survey-no-human-verification-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/funbloxxyz-free-robux_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-minecraft-server-hosting_GM479516143.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-robux-hack-2021-android_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-tiktok-video_GM835599320.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-free-gift-card-script_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-people-on-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-quiz-free-robux_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-get-free-limited-items-on-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/new-codes-speed-hack-roblox-jailbreak-mai-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/mm2-roblox-cheat-codes_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-hack-mobile_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-get-the-penguin-suit-in-roblox-for-free_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/hack-roblox-bee-swarm-simulator-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_off00002e97.bin
cf3b12ec04e978ec3cfd81ad8ca09f2a5d8d353554eafde6e36b338f27f87129		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E97 22296 bytes
font_01_sfnt_off00006003.bin
3dc1e9818cc64ad5ea657be01d593a2846b8f68678bd06e8f0c55f4f6f2b3841		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 19300 bytes

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