Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee405efc95b60e9…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 07:09:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2039db75c704bb5f417ba3d519405a5c SHA-1: 76aacad0e423a7d0b8b19ae42b75096f91a077c1 SHA-256: 2ee405efc95b60e969ab3af9074b8342bfae1c96939d679acf0673d8af39934d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'free Robux' or game hacks, a common lure for distributing malware. The ML classifier strongly flagged this PDF as malicious, and the heuristics indicate it's designed as a redirector to potentially malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/free-robux-icu-game-hack PDF link annotation
    • http://perpustakaan-stikesmsb.com/repository/roblox-kill-hack-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-codes-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/on-roblox-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/noob-vs-pro-vs-hacker-roblox-bloxburg-build_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-hack-for-roblox-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-gametestrobloxcom-accounts_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/greenwood-town-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-robux-using-email_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/how-to-hack-anyone-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-link-download_GM406889139.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_off000030f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F4 22660 bytes
SHA-256: a056041aa681fe391fa0a27f312cf4c13d5230b26b46cfecb4b0f98bfdd51ef6
font_01_sfnt_off000063ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 18716 bytes
SHA-256: b57c3769b7cc02b99a1de3dac44692b55206de08d5cb69bee89d55955e01bf8d

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