Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e884a07d78f3ebe…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 13:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45199c8c7f335798e42d266d8d702e9d SHA-1: b3605e0d85c673651132b2a1479d0bb4a572da1a SHA-256: 3e884a07d78f3ebe99b661247d085c85b83a4063ca3c7968bbaeb070428a15bf
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious infrastructure under the guise of providing information on 'aplasia medular pdf pediatria'. 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.cc/wb?keyword=aplasia%20medular%20pdf%20pediatria
    • http://files.prowrestlingtights.com/uploads/1/3/1/6/131636852/fimisotaj-zaxewewefizuxod-wevobazes-namamo.pdf
    • http://files.dibaajimowin.com/uploads/1/3/0/7/130776485/8664935.pdf
    • http://files.mrgoochee.com/uploads/1/3/0/8/130874109/d3f9f1206e3.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/76168173349.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/51252282111.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/desolotufatezafofobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/sogute.pdf
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/28970845184.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/59277560418.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/64709610955.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5203/files/xegol.pdf
    • https://cdn.shopify.com/s/files/1/0432/8783/8886/files/nulokiwad.pdf
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/79615966814.pdf
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/58807735828.pdf
    • https://cdn.shopify.com/s/files/1/0452/0234/2037/files/altivar_320_manual.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_off00006619.bin
83c83352911669fd8096a19eb57523afad4975621939e809356b5a17e4e7c60d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6619 5176 bytes
font_01_sfnt_off00007795.bin
73e85b7355d5a54a3356651b008f6003d229155eb9be27299b205d65f3382a43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7795 11380 bytes

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