Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a6234d830905fd…

MALICIOUS

PDF

38.0 KB Created: 2020-09-16 19:24:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b2131a3a2a45813175756246971a961 SHA-1: 410a9f8d42a9d6d3bd9204d694f92eac3532e458 SHA-256: 96a6234d830905fdd20f9818f370b2760935fef82a905e35ba6f2a00e5e8bd6b
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=cow+evolution+hack'. Additionally, it exhibits a PDF link farm heuristic, indicating an attempt to generate traffic or distribute content through numerous external links. The presence of a visual download button lure further supports the malicious intent. While no scripts were extracted, the combination of these factors strongly suggests a malicious document designed to trick users into navigating to harmful URLs.

Heuristics 4

  • 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.
  • 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
  • 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 https://ttraff.club/wix?keyword=cow+evolution+hack
    • http://velojop.vitalishealthcare.com/uploads/1/3/1/4/131483281/nekiw-zakuwavadub-webizopenabula-xofakuverug.pdf
    • http://files.graceyourspace.co/uploads/1/3/0/9/130968996/2851363.pdf
    • http://files.kidneycarecleveland.com/uploads/1/3/1/4/131453402/fuwiz_vogofaruzowig_xipeze.pdf
    • https://cdn.shopify.com/s/files/1/0435/2435/8308/files/philips_avent_manual_breast_pump_how_to_use.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magizokoluredofet.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/download_avengers_endgame_full_movie_AND_11.pdf
    • https://cdn.shopify.com/s/files/1/0437/3636/7265/files/toastmasters_grammarian_report_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/nuvanimewifunal.pdf
    • https://5656b3e5-c749-4d10-908a-b5d97fd948ca.filesusr.com/ugd/b926a8_b6f4f68bfc164dfaa0360432fd7aaabc.pdf?index=true
    • https://616d7827-7158-4695-9ee0-0d9f31b53178.filesusr.com/ugd/b5472a_f5853abab86849c6be65a20ab4ca7e2a.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005810.bin
88d6cee4ad2c0df5b4714b51d56b6e54d9c13ddd3b2d585a97d79b505dd47250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5810 4736 bytes
font_01_sfnt_off0000683c.bin
6b8c6177f909d7bc21c987ea9e548fba3897bdab34de1e8a9c52f56cdbca339f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683C 10396 bytes

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