Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d7646bb0d218a2…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 04:54:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ea7daeb85200ff19d78b1ff96b9d267d SHA-1: b674d7d6c873f7893bbe1a575f64d0acc7820296 SHA-256: 74d7646bb0d218a25c9d8e00ce3de8f19c33a8e4fd8742ffc72b9ce878b8f709
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed to trick users into downloading other files by presenting itself as a "Roblox Hack Tool". It contains a large number of embedded links, many pointing to other PDFs hosted on slim.sisminkada.net, which are likely part of a link farm or download scheme. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links and a "download button" lure further support this assessment.

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/roblox-hack-tool-free-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-no-human-verification-or-survey-or-offers-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/lohith-gaming-free-robux-6k_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-speed-hack-in-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-jailbreak-cheat-engine-codes_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robloxs-hack-site_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-games-free-admin_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/royale-high-roblox-dresses-free-glowing-beach-skirt_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-military-shirt-templates-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/counter-roblox-hack-aimbot-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_off000033d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D9 22220 bytes
SHA-256: 6a0b748cc1d6044a83959656baac3fc6b3b17e2355e23f9971ca4b13aaa5e1e3
font_01_sfnt_off000064f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F3 18820 bytes
SHA-256: 6bed8f7b379df21ba03fe48b17d2130bc445cb95839732550b71cea8713ce792

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