Malicious PDF — malware analysis report

Static analysis result for SHA-256 331fd49091c38d4a…

MALICIOUS

PDF

65.5 KB Created: 2020-08-05 07:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92dc50d49cced20326483d5c74d60ed4 SHA-1: 39eefdd1d05b03765ebb0206a2ccee98808e8ab3 SHA-256: 331fd49091c38d4a9173ec73aea15970a4048463acd5beece80fcbbca17cb4a9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=working+environment+definition+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct payload execution.

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.cc/pify?keyword=working+environment+definition+pdf
    • http://files.wheeloffortuneranch.com/uploads/1/3/1/4/131437969/penop_jusevezad_palemoregoxil_wefotezifutavax.pdf
    • http://files.phoenixunionindoor.org/uploads/1/3/1/3/131382243/3345855.pdf
    • http://files.hanleyvoices.org/uploads/1/3/2/6/132681194/f8870d0ec.pdf
    • http://laneves.bearcreekfrenchies.com/uploads/1/3/1/3/131383791/7344864.pdf
    • http://files.littlebunsinc.com/uploads/1/3/0/7/130738970/sezonexokusutenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6635/0998/files/wunutarexeralaposized.pdf
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/zatuladigaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/63656639835.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/87755553478.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/zarokarur.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/95439586947.pdf
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/basel_3_lcr.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/lubep.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/4729434684.pdf
    • https://cdn.shopify.com/s/files/1/0433/6471/2616/files/xuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/strongsville_ohio_zip_code.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/53436195199.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_off0000c283.bin
e4ed3cc7fcdc7cafb1f293463593841a0f9c5e910120debdaf6aa4eeee071107		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC283 5080 bytes
font_01_sfnt_off0000d3d5.bin
a96c9a47cfcbe417b7bd10621f966f6f223808886d961281564267587d9785e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 10876 bytes

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