Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd59111f3e2ff7a4…

MALICIOUS

PDF

37.0 KB Created: 2020-09-17 08:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ac5ec2b5f5b3984fd7115c304dd8c36 SHA-1: e1356131bcf9c47e3e3082fb31b97db74b102124 SHA-256: cd59111f3e2ff7a457fe19a9e8c74d61861ca9a0794399065b68cb920d70b583
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, includes text referencing "The wood fire handbook pdf" and the tool used to generate the PDF, suggesting a lure to download malicious content. The presence of a link farm further supports the malicious intent of directing users to external, potentially harmful, resources.

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.link/wix?keyword=the+wood+fire+handbook+pdf
    • http://files.shamancellardoor.com/uploads/1/3/1/3/131397964/6ce58414.pdf
    • https://cdn.shopify.com/s/files/1/0463/0495/2477/files/74756626448.pdf
    • https://cdn.shopify.com/s/files/1/0481/6587/9957/files/78706247412.pdf
    • https://cdn.shopify.com/s/files/1/0432/2082/8315/files/basis_tecnologia_da_informao_cnpj.pdf
    • https://cdn.shopify.com/s/files/1/0436/1935/2740/files/83095474411.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/tender_bidding_process.pdf
    • https://31924444-8683-48b7-9df8-e25886084343.filesusr.com/ugd/9eb187_dc7bd70eba4948809c5087412f82856f.pdf?index=true
    • https://ec292b65-5185-4611-814d-8e0dc556e250.filesusr.com/ugd/35f767_70fff4f8676f451d905eab54ac4a0c1c.pdf?index=true
    • https://15d7d049-9719-4076-ab13-96f84f7ceb06.filesusr.com/ugd/3402b1_7b960b7f17ea43ad936ca85ddb38aae6.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/0826/2297/files/57598187070.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/12099494101.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/73946330373.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/graphic_organizers_for_social_studies.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/gabev.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_off000055a5.bin
c4e690c2627fe76916b6e37e44d607a671fb4d9b3d3e1ce0e1d73a9fc2063b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A5 5164 bytes
font_01_sfnt_off0000673d.bin
6b92b1e79d0f2967005657f3c2c772986fbee4935ebb671a99686ae5767e6561		 pdf-font-stream PDF embedded font (sfnt) at offset 0x673D 9372 bytes

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