Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d074dad4319e21…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 03:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1889c70c31e1647d8a9ff15f72b654f SHA-1: 2b94e6cf958630ae90dc155dc5e9e8aed6b90942 SHA-256: d0d074dad4319e218c2703c19ab9dd78aa31349c01352318d1d46f0adef8c9cf
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=social+anxiety+treatment+guidelines, which is flagged as a malicious redirector. The document body, though partially garbled, also contains this URL. The presence of numerous links, including those pointing to external PDFs, suggests an attempt to manipulate search engine results or redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=social+anxiety+treatment+guidelines
    • http://goloxof.iolaire100.com/uploads/1/3/2/6/132682883/dc49ea2.pdf
    • http://files.cisddashboards.com/uploads/1/3/0/8/130814788/87a2ca.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/58870974313.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/netajowimavipu.pdf
    • https://cdn.shopify.com/s/files/1/0450/3198/1220/files/zopunumomoxefasamo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/suzawarewezojadurigez.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/62756973050.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/zotusomolujulutopigoninaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/74479440490.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/wefofegabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/90219421742.pdf
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/62238387611.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/mark_twain_huckleberry_finn.pdf
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/xesufakegasetajijuzifozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/28236533652.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/asurion_claim_form_verizon.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_off0000750f.bin
a481bb7620f8a755a2305acc4457222f466753ce3a37061a2efae9acd59d9e96
pdf-font-stream PDF embedded font (sfnt) at offset 0x750F 5532 bytes
font_01_sfnt_off000087c4.bin
5c94c6928eda4f0b4bcfb69e52dfc6435fea3b530662520da2e8d99466e82ef4
pdf-font-stream PDF embedded font (sfnt) at offset 0x87C4 10076 bytes