Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3806cea55d0b16a…

MALICIOUS

PDF

49.2 KB Created: 2020-08-31 01:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44607b9068d4a3825f0f4c007ca986e1 SHA-1: 955d171d7dff03ddb7a94d159bac59b0f4b5a682 SHA-256: b3806cea55d0b16a4eb4005b16b74b381144f9f982d31aefef65f37a677c3eed
120 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a warning about hotel reservations, directing users to a malicious redirector. The document body and heuristics indicate a social engineering lure to trick users into clicking the malicious URL. The PDF also contains a large number of links, many pointing to Shopify, likely for SEO manipulation or to host further malicious content.

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.me/wix?keyword=no+queremos+perder+nuestras+reservaciones+de+hotel
    • https://cdn.shopify.com/s/files/1/0437/8987/7408/files/pepabunozuxusev.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/zowipelefepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/mutamejinigasoramufinileb.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/analytical_mechanics_7th_edition.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7202ca3fb5d4b8d985085529222a7bb.pdf
    • https://static.usrfiles.com/ugd/ab922d_95a191eda77446e0bd6dffaf0f7376b7.pdf
    • https://static.usrfiles.com/ugd/6908d7_59bee1179e544a1f9796f986f7cc9ac4.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bb02df74e0c4388b2052b7cbe492e65.pdf
    • https://static.usrfiles.com/ugd/c3f88d_d898f3ba248845f6bce02e2b74261155.pdf
    • https://static.usrfiles.com/ugd/cc03df_d1bb93701e444a0a800e9d0a6890d93f.pdf
    • https://static.usrfiles.com/ugd/ae059d_e0aac1f079a742ccabc81790091a60c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa221773c22547fdb89987f057ae7911.pdf
    • https://static.usrfiles.com/ugd/b8c837_87d00bb687ca4e67b4ae52a38c2d35ef.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007def.bin
03d7a665a42ef0d91acaa338ab14b24a99cf6a9a050ab01fe9c5960b6135102b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEF 5500 bytes
font_01_sfnt_off00009085.bin
f1ec975d7718ad3855f129c75c2c27669f4cd310c44cc3fce3a9a69246eac87b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9085 11524 bytes

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