Malicious PDF — malware analysis report

Static analysis result for SHA-256 3190a6604c65d46e…

MALICIOUS

PDF

40.5 KB Created: 2020-08-18 22:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73c6e95e5a5113822154368020c37ffe SHA-1: 616ca45c741493d0420cf988d805114a035b34da SHA-256: 3190a6604c65d46e4ac84af8dd4f9238caf62e5e05d98f02ba830bbb6e8bbb99
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=family+budget+spreadsheet+template', which is likely used to direct users to further malicious content. The document's body text and metadata suggest it is disguised as a 'family budget spreadsheet template' to entice users to click the malicious links.

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=family+budget+spreadsheet+template
    • http://mizulal.denvermustangs.org/uploads/1/3/1/4/131483083/c11e66bca9ae8.pdf
    • http://files.cosmosynergy.org/uploads/1/3/1/4/131406049/gupuka_muwetamotip_jisimizuxu_vikulilopoza.pdf
    • http://mukifiji.opt-hires.com/uploads/1/3/0/9/130969204/4853627.pdf
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/napexibora.pdf
    • https://cdn.shopify.com/s/files/1/0436/2508/7138/files/17275103984.pdf
    • https://cdn.shopify.com/s/files/1/0429/1782/2620/files/sovowinubujiwimojekofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/agribusiness_management_downey.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/65157832414.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/basic_of_computer.pdf
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/dbf_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8135/files/28203086358.pdf
    • https://cdn.shopify.com/s/files/1/0447/8294/4405/files/napasikukenisomoselawor.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/faferobobuwuzimoweg.pdf
    • https://cdn.shopify.com/s/files/1/0437/3017/4113/files/bidart_campos_derecho_constitucional.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_off00005f70.bin
104d30313c0fecac7c7f799efa5e3ea5c43f31bb427eb1fce12948c21b806488		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F70 5568 bytes
font_01_sfnt_off0000723e.bin
c5c0ce2f5e905c3ec22e606d7e9c2508bfff74125b4f4728a712b841e33352d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x723E 10196 bytes

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