Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9802e386920590…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 08:49:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 36182534743b8c00f6d24b58ab512583 SHA-1: 301f05e91819279afe8a30ace8ae6601b9fce8ea SHA-256: 3d9802e38692059026ee1cc5c7e2ccb6752feb07dd1efd8507e43cf70b730462
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to known malicious redirectors. The document body, though partially garbled, contains references to these lures and URLs, suggesting an attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-hack-pw-game-hack In PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/get-free-roblox-gg_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/build-a-boat-for-treasure-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-accessoires-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-roblox-keywords_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/the-only-free-robux-game-that-works1_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/go-thru-walls-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-20219_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-secret-site_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/how-to-hack-free-robux-no-downloading_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/chat-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-money-hack-roblox-vicholsimlotor_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-fortnite-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-admin-commands-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/hackear-el-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-hack-november-2021_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/proxo-hack-roblox-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_off00003088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3088 22344 bytes
SHA-256: c3f91f5144583c473833f7d9d8051f349b68af946ff85166c54522eace6fc277
font_01_sfnt_off0000622a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622A 18976 bytes
SHA-256: f2b0be400dafd8516a26147e7156b7f3490fcb5a381449ca026ff2603d9c864f

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