Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee2750088675b1e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 17:22:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98b5da22b2500625b87f174fb3436b7f SHA-1: ae89b5b9f57baab0bc2242fa607ddd4e6380fe4b SHA-256: eee2750088675b1e03440c09f1b7103c016ea2b044117468a9c201f7972d38dd
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to trick users into visiting the redirector, likely as part of a phishing or malware distribution scheme.

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.cc/pify?keyword=context+clues+worksheets+7th+grade
    • http://vuzodozaz.cherryvalleybowhunters.org/uploads/1/3/0/7/130738799/8594571.pdf
    • http://rilotonel.friendsofswedehollow.org/uploads/1/3/0/8/130813592/bf4c26.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/fegufotadobamepiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/20283640712.pdf
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/the_killers_bones.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/21912557281.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/wezulowowekudufiwisuguwek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/algo_trading_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/89314547946.pdf
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/83209579924.pdf
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/american_pastoral_movie_parents_guide.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_off00006667.bin
07e826f9e00fc8c7cb8b0d4ff63a60d7e7e9f65fb17734575663ece9675de6ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6667 5408 bytes
font_01_sfnt_off000078df.bin
556307dfc24c6eaaef5b22b7f0edcf3406b76eb92d3b434e5ae5259f46ce2c6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DF 10036 bytes

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