Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4778864fecc751f…

MALICIOUS

PDF

45.1 KB Created: 2020-08-29 04:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0ae338ea4ec2f4a90ed617ce004295 SHA-1: 652aceea0ac459f856b238767193f6ea0447723d SHA-256: c4778864fecc751ff44b7e4e55da961e1b96c950da9c6b76dc812b72a4c2e567
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=bbc+porn+hd', which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content through a link farm strategy.

Heuristics 3

  • 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.
  • 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.cc/wix?keyword=bbc+porn+hd
    • https://cdn.shopify.com/s/files/1/0433/6841/5400/files/91268043104.pdf
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/51749541377.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/17156685540.pdf
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/75515591129.pdf
    • https://cdn.shopify.com/s/files/1/0435/7691/8175/files/vapilidira.pdf
    • https://static.usrfiles.com/ugd/b8c837_a920b7bc1d034a669e644b66760c637d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ec9cfcc516241eb91aaee5f9f0ea4fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0ce30be00e344cbada7ca0ea8cfc5bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_8240c5e5019940c4b2de46f355e3afa8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5c65ece9ec046d9ac3410bf74d08111.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c241bf2bd904e6089d9dccdb7324562.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcf30839bb4f44938fac5f89738432c1.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062e2.bin
7f60026a42baf58c7b2d0e587841aebc5381f02049167923e33b1be7ece21f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E2 4472 bytes
font_01_sfnt_off000071dd.bin
3fb3441193ed2c61aa5c4f88a6faca641c62d3ed1ad0f581b378425371a00010		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DD 12504 bytes
font_02_sfnt_off00009a0d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0D 4324 bytes

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