Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59df03813d38336…

MALICIOUS

PDF

34.4 KB Created: 2020-08-27 21:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44d34fe547ecdf2e1610577c9cd5fa51 SHA-1: a1380ed93a7252ad131bec28fb0a9681bd51ee4e SHA-256: d59df03813d383366280ed5d44cf910b9a0dc0fa5e1e079f632e25ea05984a88
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The document body text, though garbled, contains a URL that matches the malicious redirector, suggesting the document's primary purpose is to drive traffic to malicious sites. The presence of a link farm and a malicious redirector indicates a likely phishing or malware distribution attempt.

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/pify?keyword=let+us+c+by+yashwant+kanetkar+15th+e
    • http://files.vendettanailbar.com/uploads/1/3/0/7/130739069/8613156.pdf
    • http://files.miami-mustangs.com/uploads/1/3/0/7/130775275/1666390.pdf
    • http://files.jor-designs.com/uploads/1/3/1/4/131452938/dedexo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/tobuwonafukozela.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/17397800093.pdf
    • https://cdn.shopify.com/s/files/1/0437/6880/7578/files/78250188647.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/36899057863.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/scribus_vs_publisher.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/76813292066.pdf
    • https://cdn.shopify.com/s/files/1/0436/8446/2745/files/acta_constitutiva_formato_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/conditional_formatting_google_sheets_entire_column.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/tizuvupigujusezupagekudof.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/43431137047.pdf
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/taguzetotuxibonategabuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/exponential_equation_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0463/8084/3163/files/tozadudifemewe.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_off00004840.bin
6b7331e00b1b85fd9f2b2596778a883e2d6797e89ff830058a18629399b24427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4840 5368 bytes
font_01_sfnt_off00005a9a.bin
443076909e4623ad196f8a1d5860649af1acb285c75d83252d8c01733b3bd14f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9A 9908 bytes

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