Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf98fdff4c8488b…

MALICIOUS

PDF

39.6 KB Created: 2020-08-21 18:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8933efc0900a7488bca933d5ff40ed52 SHA-1: 438545a3eb62d0dd8fecc44b8bd05f1bff16771d SHA-256: caf98fdff4c8488b73d773c650e41e68adf0f434be06aefa0e97730c02dab331
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=oh+cecilia+song+by+vamps', is identified as a known malicious redirector. This suggests the document's primary purpose is to lure users into clicking malicious links, likely leading to further compromise.

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.com/pify?keyword=oh+cecilia+song+by+vamps
    • http://files.poughkeepsiepopculture.com/uploads/1/3/1/3/131397946/2886862.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/xepalupajagimolibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/roborola.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/rawirasewefiritononazofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/piworinefukujuzada.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/jetibefo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/multivariable_calculus_edwards_and_penney.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/mugagajodukaduzi.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_off0000513a.bin
c4fbaea6d3b5bd3c76e3b728ce3a52b20d2ecbd94fe5e7586f787c5264b1f3ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x513A 5580 bytes
font_01_sfnt_off00006412.bin
af9e3fe4ccfb545fd36f10962ed3050717b36f7e25730275e886bdf5fcf4c856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6412 14896 bytes

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