Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7d8965441631b4…

MALICIOUS

PDF

46.4 KB Created: 2020-08-16 13:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5499944224efde0223c09996475e95b5 SHA-1: 361de9139451d88d443cc888593bbf9258b68a4c SHA-256: 3e7d8965441631b4d7404534b93f36b067ff391845a79ed9035619517d314a59
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, including a critical finding of a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=rental+contract+house+template'. The document body, though heavily obfuscated, contains text related to a rental contract and the URL itself, suggesting a lure. The presence of numerous links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination or to spread malicious content. 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.ru/pify?keyword=rental+contract+house+template
    • http://nefefajun.bsr-project.org/uploads/1/3/1/4/131406717/3de1064fab250.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5976/files/rigixexabapetirotidafov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/nadixovadasukivejepeju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8283/3308/files/wukelid.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/20304527971.pdf
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/gatimeromepevu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6727/files/83125889566.pdf
    • https://cdn.shopify.com/s/files/1/0432/3436/1508/files/abdominal_tapping.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/15309478449.pdf
    • https://cdn.shopify.com/s/files/1/0434/7363/3432/files/ripavuwevolaposofavotupin.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_off00007995.bin
67ab7ce51a2c8b8c2c0049a00c8ec1803213ee99a919090e93437e13765dfd59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7995 5180 bytes
font_01_sfnt_off00008b02.bin
114efed0de3aefeadba7c17c0699372d2f5bff838254b1d22013d492ff231737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B02 10052 bytes

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