Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c567fdb8c8cc304…

MALICIOUS

PDF

61.8 KB Created: 2020-08-31 13:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dfaec56c54c6ca086a62298c20fa30c SHA-1: 83cc937120cc25dbbf6cb594f1fd0210f66917dd SHA-256: 9c567fdb8c8cc3045aaaabd1d1cdf6c1e780abc80478bad1dec948f4bcce7299
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious domain, disguised as a free download for a sociology textbook. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the redirector. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or to distribute malicious content. The embedded URL in the document body, 'https://ttraff.com/wix?keyword=anthony+giddens+sociology+8th+edition+pdf+free+download', is the primary indicator of malicious intent.

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.com/wix?keyword=anthony+giddens+sociology+8th+edition+pdf+free+download
    • https://static.usrfiles.com/ugd/bf0735_5fb1830a375443cb8f215c699a12ffd2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa25e1f126944930bdbefbf180af2a56.pdf
    • https://static.usrfiles.com/ugd/33a16d_638f5546634d409397afb97f5affd439.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_8c50df4f73ab422e9cb486dd624df806.pdf
    • https://static.usrfiles.com/ugd/9c43ec_87ca5cc291f24fa0aac09e4145d0df44.pdf
    • https://cdn.shopify.com/s/files/1/0434/7713/9613/files/sign_language_alphabet_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/lista_de_medicamentos_cardiotonicos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3596/7143/files/zulugivotosikeworifutuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/donigonokuzovugogop.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/schengen_visa_application_form_austria.pdf
    • https://static.usrfiles.com/ugd/74a852_185f568f87e143c38e5e77df818499e7.pdf
    • https://static.usrfiles.com/ugd/7603ae_3183cbc93c3a4e6190e6cf8e163cf1cf.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_94a5f44b6d7840d393a8a206e19ba0bc.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
stream_006_off0000c39b.bin
2fdcd753e6e3d154e7567258fe0451867c008eea7150fdabae9e4aa7f4079bf4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC39B 22320 bytes
font_00_sfnt_off00008c13.bin
22811ebffdacce84e087363b9f790c2041c28ec2d08903811adc32e835873068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C13 5792 bytes
font_01_sfnt_off00009fea.bin
4f82d42aaa7a63cf393b0e026a3ba317bff8838822ca759a2af46d697436a066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEA 10388 bytes

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