Malicious PDF — malware analysis report

Static analysis result for SHA-256 5095baf8e5fca2e6…

MALICIOUS

PDF

36.1 KB Created: 2020-08-03 02:00:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 678246a702fc3335d84efea29e45616d SHA-1: 1d75eb618b7b6e8c406975ab7de5a9ac81881cdb SHA-256: 5095baf8e5fca2e661ca5f625f2c308d18a5d05b31e5bd799b2171c28021b59f
120 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 identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many hosted on Shopify, suggesting an attempt to manipulate search results or distribute content. The primary malicious URL is https://ttraff.com/pify?keyword=valvoline+atf%252B+4, which is flagged as a malicious redirector. No scripts were extracted, and the document body is largely unreadable binary data.

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=valvoline+atf%252B+4
    • http://files.seanhuttonmusic.com/uploads/1/3/1/4/131453255/soxitajudonut.pdf
    • http://files.dennishorseshoes.com/uploads/1/3/2/7/132740270/442f637.pdf
    • http://files.episcopalcatholicchurch.org/uploads/1/3/2/6/132681153/7204252.pdf
    • https://cdn.shopify.com/s/files/1/0438/1304/4386/files/69464483947.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/19456351295.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/subosurujotawexavosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/rabipatuzulumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vabagibad.pdf
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/runafevuwuda.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6918/files/jawede.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/potofoxigexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/11604504200.pdf
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/79384501387.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6143/files/45422235021.pdf
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/6228263579.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_off00004e77.bin
c26a4bcb03f45dd21443f7fdc5baee4299fc855214410283e907df92d3ae4384		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E77 4600 bytes
font_01_sfnt_off00005e46.bin
428f45a9dc00a1061b960e1c8714fb8e2ba110f743bda7d2e386df56175c034a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 11120 bytes

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