Malicious PDF — malware analysis report

Static analysis result for SHA-256 94187b2722b9cbb4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-28 09:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80790fa726fc4f2feda1c26b5338c80e SHA-1: 2a4b7a3587aab8cf364751e0bda99de1fa433cdb SHA-256: 94187b2722b9cbb4084074aeb858721b0c3962d53583b0ce1e06603006c1d7eb
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ocenaudio+user+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0436/1977/8723/files/balibojowewugowi.pdf'. The presence of a visual download button lure further supports the malicious intent of directing users to potentially harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ocenaudio+user+guide
    • http://files.coachmatt.com.au/uploads/1/3/0/8/130814133/zevojufovive_zogepokabuwesap_jinibi_zonugez.pdf
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/balibojowewugowi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5014/5704/files/bootstrap_template_for_asp._net_c.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/marketing_plan_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/el_aprendiz_de_brujo_grimorio.pdf
    • https://cdn.shopify.com/s/files/1/0431/5915/8946/files/authentic_leadership_harvard_business_review.pdf
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/wizotikizisuvonupam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigagijewunafusigiku.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/vudifexanugoxirova.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/
    • https://cdn.shopify.com/s/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a9.bin
1238986c0a84d3580ec70349c02ab10d422f56851950aca2679e46a9dbc3ff28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A9 5104 bytes
font_01_sfnt_off00007702.bin
6d03e76e15e7e27812834c65839cdb58d4a1f3cca5fb72ad916ef5c7f981ccdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7702 9996 bytes

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