Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e41ab169fecaa5…

MALICIOUS

PDF

55.8 KB Created: 2020-08-19 02:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c47a34d14ccf0ed94eba2b2dd0fe22f SHA-1: 164818f626b368890ba01957a5d770c7a5255eed SHA-256: f6e41ab169fecaa57df4c89e2c3ddec6c22d57a4cf11c18f5b5fb12d452e97b5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=golang+template+range+string+array'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of outbound links, with the first being 'https://cdn.shopify.com/s/files/1/0454/6048/8350/files/3472973853.pdf'. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure to visit a potentially malicious site.

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.com/pify?keyword=golang+template+range+string+array
    • http://files.imablumm.com/uploads/1/3/1/1/131164272/xufipu.pdf
    • http://files.tsgsalesspot.com/uploads/1/3/1/4/131453753/taxolifozupogow-befukudeneget.pdf
    • http://files.streetchurchministries.org/uploads/1/3/1/4/131454521/turad.pdf
    • http://files.dmcunite.com/uploads/1/3/0/7/130775055/zarevakurilise.pdf
    • https://cdn.shopify.com/s/files/1/0454/6048/8350/files/3472973853.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/89689736718.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/change_my_mind_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0443/6351/4012/files/yahoo_weather_san_jose_ca.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/73789705833.pdf
    • https://cdn.shopify.com/s/files/1/0447/8972/7381/files/muvoguvilovukosabovo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7714/files/91564405401.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/israel_agriculture_information_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7807/4022/files/light_pink_heart_background_vector_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/63845603305.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_off00008e81.bin
75886cec013512dc3c6cba893e48e0cdebd2004bbb8bdee819bf24906f023df7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E81 5272 bytes
font_01_sfnt_off0000a065.bin
57015f2b9ba7a8a694cb0130fbcc397e29c355c2381c3876225fc82891adc09f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA065 15756 bytes

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