Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd4ea68450b061a9…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 09:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cfb6aefe29fe5eef6c1e08538040f61 SHA-1: 5a24906fe3237f82677bb498f423e25300207d72 SHA-256: fd4ea68450b061a9e5372f80dd776cc0ab9c95869c41df1ce78cc2c1da9d9f24
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but the primary malicious link is to 'ttraff.ru'. This URL is flagged as a malicious redirector, suggesting the document is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the target URL and appears to be a lure for a 'research paper template'. 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=research+paper+template+powerpoint
    • http://files.strettoyouthchamberorchestra.org/uploads/1/3/1/8/131856409/zadobulebutugak.pdf
    • http://xunamagim.joslinelementary.org/uploads/1/3/2/7/132740541/9292193.pdf
    • http://files.aldenstidom.info/uploads/1/3/2/7/132741109/2066738.pdf
    • http://samufa.deewiegand.com/uploads/1/3/0/9/130969742/nukovujovikeg.pdf
    • http://files.faithlosgatos.org/uploads/1/3/1/4/131411857/3dea4.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/83065960515.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/pumped_up_kicks_bass_tab.pdf
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/home_alone_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/nizibimimibegonirexatudap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/radeziwiwilajumigetadad.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/48190230832.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0993/files/4585688670.pdf
    • https://cdn.shopify.com/s/files/1/0435/6774/3139/files/ethical_issues_in_psychology_banyard.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_off00007dfd.bin
4853ded1bf4bd77ec06f49b5fa3bda7b53f655250d328934c00aceb64585f6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFD 5272 bytes
font_01_sfnt_off00008fd6.bin
dea3dcd60c48a7df335fcccc854dba2ed34890e0dd750d75e2be772bb75aa69d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD6 10148 bytes

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