Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c331087b96a787e…

MALICIOUS

PDF

49.8 KB Created: 2020-07-30 14:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d3bc39757d32919e077975b0d7c6e02 SHA-1: d00c7cf8c00068d5aba792086c01617cda9ec5f9 SHA-256: 9c331087b96a787e32914aa78b14e791802a6e72908bf12b4e5d48b41011bc61
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is `https://ttraff.ru/pify?keyword=aspects+of+love+pdf`, which is likely used to funnel users to a malicious site. Another heuristic indicates a PDF link farm, with `https://cdn.shopify.com/s/files/1/0429/0910/6335/files/84816200074.pdf` being one of many such links.

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=aspects+of+love+pdf
    • http://files.capturingculture-reighanfisher.com/uploads/1/3/2/6/132695915/fubogasilakivumas.pdf
    • http://files.shopchiffons.com/uploads/1/3/1/4/131406610/3eb1b113823.pdf
    • http://files.davidjhelfand.info/uploads/1/3/0/7/130776819/gijisexuloboget.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/84816200074.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/jajeramavimiledoronuponam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/48797073346.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/lomubopubefagimevap.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/52987712195.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/30643078075.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/rikipenemakugunev.pdf
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/bupepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/17228681498.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/1/0432/2741/4696/files/5298771219

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087e4.bin
656a5d2ee0e4ec6f778ecfddb2d0f405771b46b5902242573bb0b37e3cd872f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 4524 bytes
font_01_sfnt_off0000975c.bin
095955fe25ee8c3bebad8fc11060cbc035c84bad7673792b59e61ffa6d440405		 pdf-font-stream PDF embedded font (sfnt) at offset 0x975C 10392 bytes

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