Malicious PDF — malware analysis report

Static analysis result for SHA-256 2098edc0450f9ea7…

MALICIOUS

PDF

53.5 KB Created: 2020-08-17 12:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 656f6235e2c6efdddcdc31a64e61e8b2 SHA-1: 78197ad5de427730e843f746ae65666bab43026c SHA-256: 2098edc0450f9ea70f7bbac217706c13a1629561bf46396c1112928722bba026
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to manipulate search engine results. The primary malicious IOC is the redirector URL. No scripts were extracted from this sample.

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.cc/pify?keyword=leishmania+dog+guidelines
    • http://files.timelessvaca.com/uploads/1/3/0/9/130969446/pupuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/9648/7576/files/asme_v_2020_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/21342733626.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/lufutigiwojisud.pdf
    • https://cdn.shopify.com/s/files/1/0436/1050/5373/files/98715091304.pdf
    • https://cdn.shopify.com/s/files/1/0433/7057/8070/files/domuxusepovud.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/18346720738.pdf
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/13058426975.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/fageberowikegelube.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/dorax.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/rojurejudixup.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_off00009387.bin
cde1c997f57608f98a24d33a252f831b8513dd144487d406a43cc9664d9794cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9387 5084 bytes
font_01_sfnt_off0000a4b0.bin
232aa5448b9a74f9cd09e4696d16432ee4db44d40eeea136235ea6a327aa76f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B0 11340 bytes

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