Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3e53f845bb3a00…

MALICIOUS

PDF

40.6 KB Created: 2020-08-01 20:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8faa8ef28d8131a0fe0dd5e8f8cfdc82 SHA-1: 729f4640189d37339d33164e4a968fc73cb045a2 SHA-256: cd3e53f845bb3a00c4ef8517eab014029f515e07b133f13c94b91e5149ed6ee8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=com+samsung+vvm, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious sites through a link farm, likely for phishing or malware distribution.

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/pify?keyword=com+samsung+vvm
    • http://files.bhatnagarlab.com/uploads/1/3/0/8/130873903/2516604.pdf
    • http://files.floridabestblueberries.com/uploads/1/3/1/4/131453450/loluwelosur.pdf
    • http://files.christopherbskinner.com/uploads/1/3/0/7/130739082/9184386.pdf
    • http://files.catholiclaporte.org/uploads/1/3/1/3/131379443/6724304.pdf
    • http://files.regulatorycounsel.net/uploads/1/3/1/3/131380985/7a05c4f6c.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/pupodujejiwavusad.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/nomofivoke.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/30328886626.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/mewimagupapowiferi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/83730350912.pdf
    • https://cdn.shopify.com/s/files/1/0432/6899/7283/files/tapomikireziwewalunofevu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5585/6281/files/transmission_fluid_capacity.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/42497491962.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/4030550073.pdf
    • https://cdn.shopify.com/s/files/1/0431/5509/5712/files/ruwavazepinasomabazeda.pdf
    • https://cdn.shopify.com/s/files/1/0428/5923/3443/files/petukiposuruwusevasives.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_off00006203.bin
236101869a72962a65922fd295f56c64b018c4ca72aae78bc06d919d4331fad9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 4844 bytes
font_01_sfnt_off00007274.bin
a4320f3c70c9bf20429bd95473bc877cf9b71e03f605299b657e8e64fb36ba7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7274 10452 bytes

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