Malicious PDF — malware analysis report

Static analysis result for SHA-256 d853a8c23c542d9f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-18 17:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7373a81c9c20322bea769a08884d51f0 SHA-1: b5704c1388661d962f700bb718252031cd0bbb44 SHA-256: d853a8c23c542d9f25b4a71ef12d0c33d6764a5a6378444fa6fde40a3197461c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=bajirao+mastani+movie+dialogue+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to Shopify and other domains, suggesting a coordinated effort to distribute malicious content or engage in SEO poisoning.

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=bajirao+mastani+movie+dialogue+free
    • http://files.milandragicevich.com/uploads/1/3/1/4/131409333/2e523c38e.pdf
    • http://files.lm1a.net/uploads/1/3/1/3/131384468/witik.pdf
    • http://seripib.joshhayeswriter.com/uploads/1/3/1/4/131407406/nesepu-ramoniziromubiv.pdf
    • http://zorisana.mountyhorseandsports.com/uploads/1/3/2/6/132682156/9802011.pdf
    • https://cdn.shopify.com/s/files/1/0429/0818/8839/files/tojipiside.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/bernardino_ramazzini_libro.pdf
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/37873580439.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5285/files/ziterotusefixapomadude.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/tigubim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/43180508255.pdf
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/sovenotuviveresivupejon.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5708/files/rulobarikomadelijabifopef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e1e.bin
b9814209760dc08adadcdec7c533a4ac02efc96be2b21118beee0a31990d5d58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1E 5292 bytes
font_01_sfnt_off0000600f.bin
2991467520c2d937ac074a1084fff5811547a92500aa597be66c979fc8eda7aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600F 14752 bytes
font_02_sfnt_off00008e8c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8C 4324 bytes

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