Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a2d020bc48ac79…

MALICIOUS

PDF

50.1 KB Created: 2020-08-24 15:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3eebaee370c179935f17f0fe118e94de SHA-1: 82b1922d9738f2cce4f8e0075528e27d79a262b5 SHA-256: a0a2d020bc48ac79ddd10f5e1a4a8fdc337120796c1f158d0ea6d8c83310ca68
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=jinja+template+syntax+check'. This indicates the document's primary purpose is to lure the user to a potentially harmful site. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector. No scripts were extracted, but the embedded URLs are sufficient to classify this as a malicious redirector attempt.

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=jinja+template+syntax+check
    • http://files.perthccp.com/uploads/1/3/0/7/130775309/cf3c22f2c1.pdf
    • https://cdn.shopify.com/s/files/1/0436/9491/5738/files/89927428760.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5185/files/composite_shapes_perimeter_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/somepapije.pdf
    • https://cdn.shopify.com/s/files/1/0433/8234/1781/files/78322067243.pdf
    • https://cdn.shopify.com/s/files/1/0463/1314/4482/files/21146257760.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/pobowujureg.pdf
    • https://cdn.shopify.com/s/files/1/0440/7053/5318/files/jessica_reddy_nude.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/23850207088.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6435/files/77843532421.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8695/files/69037428465.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/86116709737.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_off000068a1.bin
2f25f78be0c560090673fb97063f6876765469571ede8ff257dde517eb19133b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A1 5376 bytes
font_01_sfnt_off00007aca.bin
f2d558cdcdf914896b55ea275d23fc2727e374aaf4aa44739d47e49208af717b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACA 13924 bytes
font_02_sfnt_off0000a6d8.bin
bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D8 16060 bytes

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