Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e5d94d0962ced6…

MALICIOUS

PDF

39.4 KB Created: 2020-08-06 23:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b6f75d87ee72bd4438a5901652e1ee7 SHA-1: e0d2b49921d9f9c2cad313e97e356ad9ce2402a1 SHA-256: e6e5d94d0962ced6af9b9049701ab7299432facffe1889a2b051d65c683f58dc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell 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 of the primary links, 'https://ttraff.ru/pify?keyword=watermark+maker+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site disguised as a tool. The presence of numerous external links indicates an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

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=watermark+maker+pdf
    • http://files.striba.net/uploads/1/3/1/3/131380413/9297027.pdf
    • http://files.dougdartsch.com/uploads/1/3/1/8/131856627/pidujeripa_mikaridadojom.pdf
    • http://xinirexif.fryeins.com/uploads/1/3/1/3/131380429/1057526.pdf
    • https://cdn.shopify.com/s/files/1/0433/4102/1334/files/47535041728.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/jinukivalodiloluzalizes.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/poluze.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8770/files/pawumenib.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/logodolajiniwigebuzapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/kekofovoworuxojazowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/nejedotepiriwulubozut.pdf
    • https://cdn.shopify.com/s/files/1/0438/8736/2216/files/delolugumalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/82535753863.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1421/files/50022033397.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/titubiluwupukisena.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_off00005d46.bin
faf0af1d3dc76802346c8786ed2cb361b1cfa73c185805da54f315a03c047450		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D46 5052 bytes
font_01_sfnt_off00006e75.bin
5f7a3020c97e9fcc4f522a4162d4fb94f8b7aa17a58cf95e53e69d50667c7463		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E75 10156 bytes

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