Malicious PDF — malware analysis report

Static analysis result for SHA-256 58092a57e4667bdb…

MALICIOUS

PDF

37.3 KB Created: 2021-06-28 15:20:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1b8046d540b7b07a01df6ba96119a272 SHA-1: 5359f5995d72ccf99ba41646ba03a289b40e9496 SHA-256: 58092a57e4667bdbf0df63266fac2a9b2b0713f5f6fb27d0cdf60c47d1c07aaa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on suspicious domains and promise free Robux or game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent to trick users into downloading potentially harmful content. No scripts were extracted, but the overall structure and linked content indicate a phishing or malware distribution attempt.

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/como-distruir-juegos-en-roblox-hack-game-hack
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/https-webrobloxknife-simulatorcom-games-202120218-howtogetfreerobux_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/games-that-give-u-free-robux_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-god-simulator-hack-gui_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-social-link-cheat_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/how-to-hack-on-roblox-mad-games_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-hack-root_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/como-hackear-roblox-para-tener-robux-con-cheat-engine_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-robux-that-actually-works_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/free-online-no-download-roblox_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-free-robux-website_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/coin-master-free-spins-for-today_GM406889139.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-free-dominus-promo-code-2021_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-hacking-kazuin_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/coin-master-free-spins_GM406889139.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/minecraft-pe-free_GM479516143.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-hack-build-you-one-boat-ccv_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-download-for-free-pc_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/account-hacker-roblox-pastebin_GM431946152.pdf
    • http://perpustakaan.ft.unismabekasi.ac.id/katalog-buku/repository/roblox-cheat-engine-download-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_off00003663.bin
56d1fe68fb388c9784f0d318b46544921e906a74eb4ecab3adabcb55f520ebe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3663 23492 bytes
font_01_sfnt_off00006b5b.bin
0536a7eff627f9665c88fb5f698b67cb568a12e5cfa7e4dc0ddfa4c76d915404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5B 19616 bytes

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