Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4e5b2497e33893…

MALICIOUS

PDF

33.4 KB Created: 2021-06-28 13:28:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e815c45c1ca1d3d7d16923cbc8142b0c SHA-1: 49c6c2ab9e75aef82a43fef75d894ae018dd0629 SHA-256: 5b4e5b2497e338937e99d43418fe67598dfbeb0b3466af5c673d2b3f327f2068
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to game hacks and free currency, directing users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates an attempt to redirect the user to a secondary stage. The document body, though partially garbled, contains references to 'Roblox Hacks' and URLs that reinforce this theme.

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/filter-roblox-hacks-game-hack PDF link annotation
    • http://perpustakaan.iaiqi.ac.id/repository/download-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-free-rare-hat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/hacker-sur-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-good-free-lvl6_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-games-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/kazok-free-robux-game_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/crack-x-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-a-star-code-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/inappropriate-roblox-games-2021_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_off00002c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C39 22232 bytes
SHA-256: 56d4a57c57689151ce15fcb104e0b62e9d76545ac8458211441dde10912bbf5a
font_01_sfnt_off00005d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D68 19044 bytes
SHA-256: 508f0f33fd6280303944c1168ef68367fcb39fa9d43cbe2c5ac8b85cea62b461

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