Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a5c643b2e15657…

MALICIOUS

PDF

42.9 KB Created: 2020-08-29 22:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91d89279f705d94dfd97b44a090bb169 SHA-1: 547d1e335dd15f69e6a7718a87051b20092589c3 SHA-256: 21a5c643b2e15657bcf16db2878cd59482910fc94be2fd5b4fd374091a2dea28
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a known malicious domain, ttraff.ru. The document body, though heavily obfuscated, contains the string 'Mente cuantica pdf' and a URL pointing to the same malicious domain, suggesting a lure for users interested in that topic. The PDF also contains a large number of links to Shopify-hosted PDFs, likely part of a link farm to improve SEO for the malicious redirector.

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/wix?keyword=mente+cuantica+pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/11698232231.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/good_application_letter_for_job.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/bike_ride_status.pdf
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/microsoft_excel_2013_training_material_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/tediko.pdf
    • https://cdn.shopify.com/s/files/1/0462/6766/2490/files/98791374848.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/82816014764.pdf
    • https://cdn.shopify.com/s/files/1/0435/9946/2558/files/61434805520.pdf
    • https://cdn.shopify.com/s/files/1/0436/5441/4494/files/gazebegapigexap.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/fofoditalomirekemebekupur.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/15695480056.pdf
    • https://cdn.shopify.com/s/files/1/0429/1965/7628/files/9058005959.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/australia_and_oceania_political_map.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d86.bin
69a0f572821efae14665f3e7e7ce05cdc6dd19248e0cb2b7ad1d0bab9c4013d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D86 4620 bytes
font_01_sfnt_off00006d58.bin
2d0ed94c198a297a9b0607224e345334eb3bcd51d7eb09fa776bd49856d4e052		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D58 10696 bytes
font_02_sfnt_off00008fe0.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE0 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.