Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a736d49d8c9071b…

MALICIOUS

PDF

41.1 KB Created: 2020-08-31 11:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6575a436ea6b6bc18581d53e14ef35c5 SHA-1: 058ce9e12cd26e13b34d616273d43dcc82af3d5b SHA-256: 7a736d49d8c9071b78f8f95ea7a455b31e2b67c0dce452d3e9369efbe85cd8fa
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. Additionally, 'PDF_SEO_LINK_FARM' suggests a large number of links, likely for SEO manipulation or to obscure malicious destinations. The primary malicious IOC is the ttraff.club URL, which is used in conjunction with a keyword parameter.

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.club/wix?keyword=el+eclipse+augusto+monterroso+summar
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/ruwapezotopitokuze.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/2982235173.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/rejejipudijobibixup.pdf
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/rukotajalezix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/platelet_aggregation_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/vemimonetewegifet.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/zumodaselelipuziru.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7049/files/mepogunovotizezomevonux.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/kawexun.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6791/files/melon_seeds_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2119/files/filumis.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/what_a_plant_knows.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_off00006311.bin
0d67198ab0769bcc8870bfbf427b5d7c60e03860b5d4bded738762a5767f50c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 5212 bytes
font_01_sfnt_off000074b5.bin
b7975a72a05bf56479a3a8db52da67ac2e28dcbf823f7cc01b3e783e63598189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B5 10132 bytes

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