Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69c6f1d855197ae…

MALICIOUS

PDF

43.6 KB Created: 2020-08-09 12:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97d53b7c75259b87d38e72f6fe13a9e0 SHA-1: bf623514e7987a1b200e111af1e5f3d6f352ab7c SHA-256: f69c6f1d855197aebf71f5596aa9b360d4e9e1f32523c2ff87f8466039345f96
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, suggesting an attempt to create a link farm for SEO manipulation. One critical heuristic indicates a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=altered+traits+pdf', which is flagged as a malicious redirector. This suggests the PDF's primary purpose is to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=altered+traits+pdf
    • http://files.kebramckenzie.com/uploads/1/3/1/3/131398497/c441dad61feff3.pdf
    • http://viloduf.ucfilter.com/uploads/1/3/1/4/131482975/eddcba2.pdf
    • http://files.saratoga.newfrousy.org/uploads/1/3/1/4/131411896/9129570.pdf
    • http://files.gracechurchoftemeculavalley.com/uploads/1/3/1/4/131437623/mevodopatiwopa-pagezuxudu-mesidal.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/download_repair_manual_acura_gsr.pdf
    • https://cdn.shopify.com/s/files/1/0436/0981/7251/files/how_to_develop_your_self_confidence.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/nevevipid.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/zosoxijijamulobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/gamizoniguxotutijogu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6256/5795/files/35594512812.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/vegopone.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/32181079072.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/47111005368.pdf
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/tenujorome.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/67724020445.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/
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e32.bin
474371abb89e293cd95a0ed892792eaab2412a88c839ab44f73fb9bf62faf9ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E32 5024 bytes
font_01_sfnt_off00007f55.bin
a326e9cb009b6458598b86b74d63ee93bb6577d59c09c97443001194e100bc50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F55 9964 bytes

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