Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ce6a17ef9c2800…

MALICIOUS

PDF

51.5 KB Created: 2020-08-12 17:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ac5b0b108cecf267864b60ad733da73 SHA-1: cddd77bcd2e5971ebe799d079a19aa7688c9344f SHA-256: d1ce6a17ef9c28005e4ca8d235036d2c8e825f50df34aa9a40f1d0b5e838e463
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 hosting other PDFs, and one critical link to a known malicious redirector at `https://ttraff.ru/wb?keyword=adobe%20after%20effects%20cs3%20tutorial%20pdf`. This indicates a link farm or redirection strategy likely intended to lead the user to a malicious site for phishing or further malware delivery. The document body, though heavily obfuscated, contains references to the tutorial lure and the malicious URL.

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.ru/wb?keyword=adobe%20after%20effects%20cs3%20tutorial%20pdf
    • http://files.azanow.org/uploads/1/3/2/7/132710753/8345340.pdf
    • http://files.emaratshipping.com/uploads/1/3/0/9/130969993/1631a7714.pdf
    • http://files.howardcountytaxicab.com/uploads/1/3/1/3/131383514/povikogefutabe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/55834266612.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/55869850093.pdf
    • https://cdn.shopify.com/s/files/1/0431/2200/0029/files/81875067219.pdf
    • https://cdn.shopify.com/s/files/1/0439/4863/8363/files/mutusagoguziza.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8060/files/break_from_toronto.pdf
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/2287854224.pdf
    • https://cdn.shopify.com/s/files/1/0432/1784/6427/files/56397819566.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/xejosugifefawevarevetadaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/70578303513.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/finding_slope_from_two_points.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/1440281571.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3929/files/enlace_quimico_ionico_y_covalente.pdf
    • https://cdn.shopify.com/s/files/1/0436/4566/5433/files/92438707328.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_off00008bc9.bin
973d8878499b002534ca2ecbaf30f74717a2b5fe8ef2d0de183dbe9633021cae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC9 5444 bytes
font_01_sfnt_off00009e51.bin
6ac95d14c9c9d3b5ad4ede9d9912a9c2723ea1d098b23362c70ea5c7fb0ea0ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E51 10196 bytes

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