Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72005016718efab…

MALICIOUS

PDF

57.3 KB Created: 2020-08-07 01:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6553721e8039fa43d8fed72be0225eff SHA-1: 1e71520af05f5a2b4986c571d0e170d5f47d8507 SHA-256: b72005016718efab9cc5a53e1fb282fdffbe029b3565943958bc42c291fe9eae
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning attack designed to funnel users to malicious content. The document body itself is heavily obfuscated but contains the target URL, indicating a social engineering lure. No scripts were extracted, limiting the analysis of direct payload execution.

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/pify?keyword=satyanarayana+biochemistry+pdf+archive
    • http://files.josehernandeztenor.com/uploads/1/3/2/6/132681460/kativojojobuve.pdf
    • http://files.gusconstantine.com/uploads/1/3/0/8/130814058/rexada.pdf
    • http://files.simcoeanimalhospital.com/uploads/1/3/2/7/132740541/e06b0.pdf
    • http://files.ashworthband.com/uploads/1/3/0/7/130739183/kemazejipejawazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/mevegulol.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/43970927472.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/mupajexariri.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/85547526586.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8936/files/gilalelimimofamaxesina.pdf
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/kevafizugogaxozujejininuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/dagobunafumorufes.pdf
    • https://cdn.shopify.com/s/files/1/0445/3544/7711/files/technical_analysis_for_dummies_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/5160/6435/files/refoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27247465441.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/950235558.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/jirage.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_off0000a159.bin
135b7053650eae60c77eef2d70538d7e17a809726b444f54455a7f39718c39bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA159 5768 bytes
font_01_sfnt_off0000b4de.bin
2ce579bf909a9fb70a777073b6dcfee5d9f244cad0773fc0b44358fada8061cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4DE 10212 bytes

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