Malicious PDF — malware analysis report

Static analysis result for SHA-256 5557c5dd61c83fb5…

MALICIOUS

PDF

36.8 KB Created: 2020-08-18 19:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6df65d5560c1899665d014c5195f3ce2 SHA-1: 2cd85459025f00f2b6d53a9a9a3c582593962706 SHA-256: 5557c5dd61c83fb517f6607be23bee89c06f1460be74a4a579c1aaa0c058c820
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as an installation guide. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious URL is https://ttraff.ru/pify?keyword=adura+max+installation+guide, which likely leads to further malicious content or malware download.

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=adura+max+installation+guide
    • http://files.westyorkshirefurniture.co.uk/uploads/1/3/1/3/131398509/ligagipewopag.pdf
    • http://files.themanhoodtree.com/uploads/1/3/1/4/131453870/c02e1734d19.pdf
    • http://files.ceciliatrono.com/uploads/1/3/1/1/131164440/pajasodabitukunorul.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/motin.pdf
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/kufekusaxonet.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/variables_in_research.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76106621034.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/mother_goose_english_nursery_rhymes.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/72675034676.pdf
    • https://cdn.shopify.com/s/files/1/0434/5551/2738/files/61867201102.pdf
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/cadena_de_suministro_farmaceutica.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/22445769696.pdf
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/84074652585.pdf
    • https://cdn.shopify.com/s/files/1/0428/0634/5895/files/escalator_design_guide.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_off00005238.bin
8479cd6422593a130e63ccf5c2fc3f1becd1e9af019bb664e11cfcb402e29e0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5238 5204 bytes
font_01_sfnt_off000063cb.bin
d2f70876badac30f4b4d449a5cc1051102d9603d7f74d340594b542ca55ee9fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CB 10168 bytes

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