Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a8c6dcaf977cd66…

MALICIOUS

PDF

47.5 KB Created: 2020-08-30 09:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6458ed0c73ec026bc206e25a98ed12ad SHA-1: 2d602b67d3d03761357333381dc0d07f9b4559f3 SHA-256: 7a8c6dcaf977cd66aeead3cd4077f14fa92ed93e1e2bdf6116c8f3ab3ffa907f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=ethics+for+the+information+age+7th+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links to other PDFs hosted on Shopify, which is characteristic of SEO link farm techniques, potentially used to obscure the malicious redirector or for other malicious purposes. No scripts were extracted from this sample.

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/wix?keyword=ethics+for+the+information+age+7th+pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/razajefopukizomaxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6327/8758/files/one_line_text_art.pdf
    • https://cdn.shopify.com/s/files/1/0434/6557/2514/files/96020071403.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/melof.pdf
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/zubipodib.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/zosorodituritusotubedim.pdf
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/binary_to_hexadecimal_conversion_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/timeline_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/28496671317.pdf
    • https://cdn.shopify.com/s/files/1/0445/8446/8644/files/download_ayat_1000_dinar.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_off00007a1f.bin
1b1b96c0f7f067b38d927102e528beb497837d9e4b83db736269fa1735eeccf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1F 5572 bytes
font_01_sfnt_off00008ce8.bin
dd7a27eee864904b504be7230434b8059efdbd4c1788c2ddaf80e277454f8b03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE8 10568 bytes

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