Malicious PDF — malware analysis report

Static analysis result for SHA-256 8874d41bdb155668…

MALICIOUS

PDF

51.3 KB Created: 2020-07-29 03:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73c92e001c2b563029a078d881f5799d SHA-1: 7001adfb163b5d14f82f29c57840fbd899f7b33b SHA-256: 8874d41bdb1556688fcfd9f619cfbd82c23cdd05b2a7242a77f260629ca4b7f3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://ttraff.cc/pify?keyword=statistical+analysis+microsoft+excel+2016+pdf', points to a known malicious redirector. This suggests the document's primary purpose is to lure users into clicking malicious links, likely for phishing or to download further malware.

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=statistical+analysis+microsoft+excel+2016+pdf
    • http://files.blue-river-vermont.com/uploads/1/3/2/7/132712116/513f61d10de22.pdf
    • http://files.harbottlehughes.com/uploads/1/3/1/4/131452887/2348445cbe19.pdf
    • http://files.premiermbprops.com/uploads/1/3/0/7/130775231/4819371.pdf
    • https://cdn.shopify.com/s/files/1/0434/9935/6324/files/75898539088.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/nozivajutezuxumejaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/2858/6402/files/firevijofefofadi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27347714529.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/wonavabeserajozegifawodu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0310/7752/files/41548494208.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/32589151993.pdf
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/kofapexojusite.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/zavojirulagen.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/
    • https://cdn.shopify.com/s/files/1/0430/63

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000892b.bin
045f10cb4ac25eda899ed2ce4b20a13112d9816d92ccac8182af125155b63170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x892B 5840 bytes
font_01_sfnt_off00009cea.bin
7e192a110bf7d54803df11fe4a6d314f56f1720d4a6ec098dde6c3bae80dbc4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEA 10328 bytes

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