Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc39d6065b65a56…

MALICIOUS

PDF

48.0 KB Created: 2020-08-25 00:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98d73e2ea8bf1d9a5e33ce46d0255f11 SHA-1: d414d2433521fd0e9ac88d427e9d4d8177ed3621 SHA-256: bfc39d6065b65a56fdd6c387d702090d1b6faf9ff35fcdad416c5fd4c8c8d2eb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=inquest+report+in+crpc', is flagged as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=inquest+report+in+crpc
    • http://files.seddonsonline.com/uploads/1/3/0/8/130874543/8531453.pdf
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/91328116468.pdf
    • https://cdn.shopify.com/s/files/1/0466/2702/9157/files/newoxozuzigumijolip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/29910740804.pdf
    • https://cdn.shopify.com/s/files/1/0438/5233/3206/files/kopapebexelopup.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/lumapefavikizutat.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/35249502858.pdf
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/editing_and_omission_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/88245594542.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/15225146876.pdf
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/743991300.pdf
    • https://cdn.shopify.com/s/files/1/0430/2772/6489/files/zisarexi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6169/6925/files/cadena_de_valor_de_una_empresa_ejemplo.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_off00007f9f.bin
c5fbfc7b62231d1852b2d5a1e709d73ec88d3408d0182779f866277823445350		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9F 4748 bytes
font_01_sfnt_off00008fd1.bin
9ed6157d2abad53803df68d67ad390ece8eb63783d18be139e86708207da3651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD1 10564 bytes

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