Malicious PDF — malware analysis report

Static analysis result for SHA-256 9012a07976044799…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 23:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 84f5f37f69b3695ee84d42ced57cd013 SHA-1: e0a65d1604b7c26e5fc47e614e126e27d5770aca SHA-256: 9012a07976044799dca5b8a47f11c7b93c1e7ad1dea7c003dbf31e0828e59fed
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game cheats and virtual currency. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful websites or initiate downloads. The document body and embedded links strongly suggest a lure for obtaining in-game advantages or currency, a common tactic for phishing or malware distribution.

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/how-to-get-free-admin-on-roblox-working-game-hack
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/zombie-illuminati-hacks-roblox_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-codes-for-roblox-robux_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/instalar-roblox-free_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/dailyrobux_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/pokemon-go-free-download-version_GM1094591345.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/admin-commands-roblox-hack-download_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/best-free-robux-sites_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-only-1-step_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/games-that-give-free-robux_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-mega-fun-obby-cheats_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/www-free-robux-com_GM431946152.pdf
    • http://pustaka.mesin.ft.unand.ac.id/repository/microsoft-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003129.bin
5a59f033054993774b4f0638f7711162356be59d61cc7314934c95286a1350f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3129 21760 bytes
font_01_sfnt_off00006141.bin
a887637c3b7da96087f5ddfa77ed80b70ff56ccc6b0dc3cd35da6f628e790d28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 19840 bytes

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