Malicious PDF — malware analysis report

Static analysis result for SHA-256 78e575584e57f12b…

MALICIOUS

PDF

33.7 KB Created: 2021-06-20 05:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2f95d85f63a9b426b3778aa43e2698d8 SHA-1: 59d82e4a2690267540407b0d7a3485f55e2ec824 SHA-256: 78e575584e57f12b3b048e02ad4f1b3e1dccb8b8b86e88bb7ff9e70e635efbc6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a high-priority lure for 'free generator / game hack' related to Roblox. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs suggest the document is designed to redirect users to potentially malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-games-free-items-game-hack PDF link annotation
    • http://elib-s2.ubl.ac.id/repository/roblox-free-pastebin-not-patched_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/nxb-how-to-get-jushin-mode-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/easiest-ways-to-make-robux-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/1x1x1-in-april-fools-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-schrt-in-robux-copyng-it_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/google-roblox-free-stuff_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-no-download-free-online_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-do-the-hair-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-admin-on-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/best-games-in-roblox-to-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hack-executor-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF 22472 bytes
SHA-256: 17933e06cc8e4618adb67a2eebba43fa09074d14a1fa1ff7bb32a9314088ad1b
font_01_sfnt_off00005ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED5 19016 bytes
SHA-256: a9577351504244be12818cf9d991ced7f0575e857a63584cba0b41418aaeaab8

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