Malicious PDF — malware analysis report

Static analysis result for SHA-256 b17ddf68aafd0136…

MALICIOUS

PDF

45.6 KB Created: 2020-08-24 20:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ed903388c003e28398e30cd36e28e82 SHA-1: a48e65414313bb363281b69c3be8e4ee662adfdb SHA-256: b17ddf68aafd0136ed6be6cfcb93f1673bf0130f0ef76b34f6dd832f395d0c80
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external domains, suggesting a link farm or redirection strategy. One critical heuristic firing indicates a PDF link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=wordpress+create+home+page+template'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous Shopify-hosted PDF files suggests an attempt to blend malicious links with seemingly benign content.

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=wordpress+create+home+page+template
    • http://files.limodafinancial.com/uploads/1/3/1/0/131070688/domojupefinaju.pdf
    • http://files.brewedandboozedfood.com/uploads/1/3/1/3/131398109/1794963.pdf
    • http://rojipoze.kamao.org/uploads/1/3/0/7/130776760/2555779.pdf
    • http://files.englishiskillingme.com/uploads/1/3/2/6/132695566/cccc21bd.pdf
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/17415388653.pdf
    • https://cdn.shopify.com/s/files/1/0434/1818/9980/files/39395123984.pdf
    • https://cdn.shopify.com/s/files/1/0430/0131/5491/files/dixifutubibatarose.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/mobilexpression_sign_up.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3829/files/vexojopik.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/sejavibalafokabisimij.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2645/files/football_manager_2019_touch_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/astm_a325m_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/5663/4787/files/wupebokasexixo.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_off00007416.bin
f0a3de903d4547f9af832348f6a4a5fb317e41f6d8a0d8fcc642a40320d53e4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7416 5500 bytes
font_01_sfnt_off000086af.bin
6a09857cb874c45c8b5cb9041c54c9a53fa89a4ec4420f6f34074f209b67b7e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AF 10332 bytes

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