Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee7664688ff3735…

MALICIOUS

PDF

51.2 KB Created: 2020-07-29 21:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7410f5af91bab1f9075bea666a3a023c SHA-1: 23909e1443cffe3e95c8e7acb0c819272cb81992 SHA-256: 4ee7664688ff37359ca8d208230f45935b873b9642c2a9754bce7d713010ef9b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify. The document body, though heavily obfuscated, appears to be related to the 'Taxonomie de bloom' definition, likely serving as a lure. The primary attack pattern involves redirecting users to malicious sites through these embedded links.

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/pify?keyword=taxonomie+de+bloom+d%25C3%25A9finition+pdf
    • http://files.jasminkwan.com/uploads/1/3/1/4/131453248/kubomerebamel.pdf
    • http://files.rockymountainracers.com/uploads/1/3/1/4/131437930/9610776.pdf
    • http://files.thewellnesscenternwj.com/uploads/1/3/1/3/131381369/5108018.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/nixomumakefivulezobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/18241221828.pdf
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/ganujopoxawuwosasasekak.pdf
    • https://cdn.shopify.com/s/files/1/0435/6974/1983/files/vebubavato.pdf
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/50706564134.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/64185142926.pdf
    • https://cdn.shopify.com/s/files/1/0440/6735/6824/files/7473238226.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/84273291225.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/3101293270.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/degilasobuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/3051/0758/files/gekojivafeted.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/30666219267.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/denujoluwedif.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_off000086fc.bin
7bd9315aeacc616c6eca1a9a09b99e8c23a29de444d248c70f20182bb071843c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FC 5000 bytes
font_01_sfnt_off0000979a.bin
2f136579d9cd86efb99d9fc7b2e02460f00bbc010941cecb1141ac22396f7eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x979A 11848 bytes

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