Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ac1992ba435b50…

MALICIOUS

PDF

51.1 KB Created: 2020-08-21 10:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6be64c09ec366535ce0084172dbcd55f SHA-1: 6202e668da03697d9d83fdf68907ef12444a71cf SHA-256: c1ac1992ba435b5004f597510d94bfc7d53c466bfa3d3fa8fd453b1b0cbd274d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=axure+rp+9+license+key+free', which is a strong indicator of a phishing or malware distribution attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs, including one leading to 'https://cdn.shopify.com/s/files/1/0438/2133/4688/files/mazetawixezepogopuro.pdf'. The presence of a 'download button' heuristic further supports the lure of downloading potentially malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=axure+rp+9+license+key+free
    • http://files.holisticimpactfoundation.org/uploads/1/3/0/7/130739480/tolosidimamirol.pdf
    • http://zekize.natpaton.com/uploads/1/3/1/8/131856570/rumebugege.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/mazetawixezepogopuro.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/kindle_cloud_reader_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/amit_goswami_livros.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/pdf_writer_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/46646787969.pdf
    • https://cdn.shopify.com/s/files/1/0435/7256/0031/files/divorce_in_islam.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/sabenozixanezubep.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/airliner_world_november_2020.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_off00008167.bin
9735d4624a01d016d0c2d9e279a53d9a36573ea94854374337d6dc64e605221b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8167 5180 bytes
font_01_sfnt_off00009325.bin
3d06b3007d78cc075bc79d223bcbb01c8cf3007cad9979daafccfb948ed09af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9325 14196 bytes

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