Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccbc05e2b85d6172…

MALICIOUS

PDF

35.8 KB Created: 2020-08-31 00:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57967da0b8343b93d34d26e3422e9a82 SHA-1: 244d2f5cc6bbf6859f5a68815528b3f958056495 SHA-256: ccbc05e2b85d617243059c210d9c9234ce0716a1ad29a531c27915d29e2af575
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a large number of embedded external links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One specific URL, https://ttraff.ru/wix?keyword=living+with+art+mark+getlein+10th+ed, is flagged as a malicious redirector. The document body contains garbled text and embedded URLs, further supporting the 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.ru/wix?keyword=living+with+art+mark+getlein+10th+ed
    • https://static.usrfiles.com/ugd/b8c837_9eb19bd710c1428b980c5170d19da769.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_9ffd552e05224b4c81ff45f79c9fef05.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_ada6460ff2c4439591acfd443403ba0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e1c665a6c0f4ef59084568526fe18b9.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_4b455363cd8e4312ad953bf4268fabc2.pdf
    • https://static.usrfiles.com/ugd/b8c837_74a5ce99115d458bb9fffb5bc40a766f.pdf
    • https://static.usrfiles.com/ugd/0d2908_99777d0bb458477aaeff7336fba48c9a.pdf
    • https://cdn.shopify.com/s/files/1/0430/3935/9127/files/tikuzogofigiwusidif.pdf
    • https://cdn.shopify.com/s/files/1/0459/7710/8647/files/aambala_720p_movie.pdf
    • https://cdn.shopify.com/s/files/1/0452/2462/4288/files/inductive_voltage_transformer.pdf
    • https://static.usrfiles.com/ugd/78c764_b07d977cc036492c9e3a50c25b7c5ea8.pdf
    • https://static.usrfiles.com/ugd/5b9a87_7cae1e872e7a4cb59d7d9286f7393847.pdf
    • https://static.usrfiles.com/ugd/34e21e_20cdabd185804ebb996ee3bac430a8c4.pdf
    • https://static.usrfiles.com/ugd/af0aa9_31062d7561ea4413ac196c0dec58fd5e.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_off00004be3.bin
bf1caba2ed6a1b1a9fb7f050ae57b3a5eb13726722734f3d02c28c9fd523b822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE3 5412 bytes
font_01_sfnt_off00005e32.bin
872d1f32292a498b448f3e386c18cf6a23907cf337b68bf4bc416b7dbf2e8a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E32 10536 bytes

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