Malicious PDF — malware analysis report

Static analysis result for SHA-256 59136530b89c90da…

MALICIOUS

PDF

58.5 KB Created: 2020-08-07 08:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85621f14c7892da142a892dc2451f027 SHA-1: e1e65889d477112be1eebcc218fb602d823d0d83 SHA-256: 59136530b89c90dabe219383b1832769b712c9db98fb8db17ab802a4109729d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1071.001 Web Protocols

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=agri+extension+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0430/4325/8522/files/sizamozetofomimapozumi.pdf'. The document body, though heavily obfuscated, contains the string 'Agri extension pdf', suggesting a lure. No scripts were extracted from this sample.

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=agri+extension+pdf
    • http://files.iwamonline.org/uploads/1/3/1/4/131455398/jagitusodizepomasebe.pdf
    • http://files.yenway.com/uploads/1/3/1/4/131437584/sofewobawuf-pajiran-poxosiraxekoxo.pdf
    • http://files.mcdmusicministries.com/uploads/1/3/1/4/131452904/4262553.pdf
    • http://files.closeencountersadventures.com/uploads/1/3/1/6/131606159/xidikufub.pdf
    • http://files.sacredhearttorry.com/uploads/1/3/1/8/131856636/5220074.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8522/files/sizamozetofomimapozumi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/fosofetupewalora.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/funifigobinesorewukazamuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/41061757219.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/visatanikisakurusita.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/74933454198.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5256/files/46835670018.pdf
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/tiwun.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1029/files/bulletin_de_salaire_vierge_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/lobusajegizomaluzox.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_off0000a8f7.bin
a7086ee13f49284946d78945a2687044c064a83bd194564f261df278b50288ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F7 5024 bytes
font_01_sfnt_off0000ba31.bin
3497a0a5b996be954a9767c15fe3d7757fd37e75a7ff64c38b212337fcf4889b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA31 10144 bytes

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