Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0f735783e96044…

MALICIOUS

PDF

44.2 KB Created: 2020-08-25 20:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c89f240e88214af45960e138b5d3e9 SHA-1: 366eb558932a879966b88e597b64eef254360933 SHA-256: 7b0f735783e96044efbb6846d827a2d0d2ff1818a633f71fad6d5ac0bedb6890
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 what appears to be a link farm hosted on Shopify. One of the primary links, however, redirects to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though heavily corrupted, contains the text 'Englische B cher vk' and the malicious URL, suggesting a lure to download books that ultimately leads to a malicious site.

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=englische+B%25C3%25BCcher+vk
    • http://pizuvid.aussiesoffaithfarms.com/uploads/1/3/0/7/130740489/2048821.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/playboy_special_editions_megapack.pdf
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/kakomexerifogo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/54598308266.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4283/files/avid_s6l_24c_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2421/files/lutitow.pdf
    • https://cdn.shopify.com/s/files/1/0450/4561/2694/files/possessive_adjectives_esl_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/34844429616.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/pomokabobasujowapolize.pdf
    • https://cdn.shopify.com/s/files/1/0430/3890/0373/files/cv_template_latex_phd.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_off00006be1.bin
1ce77304e49ec72fa71d3d3a8b926f92505b61d48089a9cff0c2d8e06abdf8c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE1 5196 bytes
font_01_sfnt_off00007d66.bin
acaed38d2b0439244d221430a027a1f05d46df76ddffcbc0c6254128a078dc7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D66 11500 bytes

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