Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e501533e273d32…

MALICIOUS

PDF

47.1 KB Created: 2020-08-16 12:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0e4b739d34b75555fe20f03a28faae5 SHA-1: ac6e0ab9dcacc9b3ca1928ea29f796ebdee3876b SHA-256: 58e501533e273d32bc5085aaaeb9c92c8bc042e62bf8cece74ba6397eed0af46
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a malicious redirector link to 'ttraff.cc', which is likely used to obscure the final malicious destination. The document body text, though corrupted, contains the phrase 'Cancer research uk sponsorship form template', suggesting a social engineering lure. The presence of numerous links and a malicious redirector indicates an attempt to drive traffic to potentially 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.cc/pify?keyword=cancer+research+uk+sponsorship+form+template
    • http://files.belmonteestates.org/uploads/1/3/2/6/132682851/pudulovonejiv.pdf
    • http://xojinaw.hohmeier.com/uploads/1/3/0/7/130776795/sakuzujosajo.pdf
    • http://gokubufu.missypierce.com/uploads/1/3/2/6/132681352/raxifamojamu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/13217429572.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/zuvamabajisolurunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/17949941371.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/definition_of_bronchial_asthma.pdf
    • https://cdn.shopify.com/s/files/1/0447/2084/9050/files/16863912733.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/88655612908.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/timimudofewegoroladox.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/gulixosoza.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/67857699564.pdf
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/bejajenoromi.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_off000070f3.bin
33f4c0931d45e62cc8ca9a67720487aaa9193d407a571ddb56718ea97762e9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3 5224 bytes
font_01_sfnt_off00008289.bin
0c5b5455720032a6e7aff47e88b0c63a667b79bb2420039c7df42c2beded43bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8289 14460 bytes

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