Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ecf54e5ef22eb8…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 01:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58d598834d265c60d1a7a8a596719d56 SHA-1: 9bd950edf3aaddd61b998a41ab744b611b46d8b5 SHA-256: 22ecf54e5ef22eb8934152ab4afe307a6249a5d2e8e53ee85106c35e60d446e0
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=pearson+realize+answers+science'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect users to potentially harmful content.

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=pearson+realize+answers+science
    • http://files.johnpurcellauthor.com/uploads/1/3/0/7/130739892/latobexafadugurona.pdf
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/tinisopoxu.pdf
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/kirchhoff_s_first_law.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/technical_analysis_of_the_financial_markets_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/fexugufijojisowesizo.pdf
    • https://cdn.shopify.com/s/files/1/0462/4384/0160/files/exegetical_outline_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/vulewuxugaterimidalefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7193/0529/files/gogoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/28132849222.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2503/files/tafofako.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2507/files/xexigatofederaxejadu.pdf
    • https://cdn.shopify.com/s/files/1/0459/7468/3815/files/kubernetes_service_yaml_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/pdf_file_reduce_size_mac.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_off000069cc.bin
5454f5d4e68c3ba547910d404f37d8912b8eff8f390f174197936b5721555683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CC 4936 bytes
font_01_sfnt_off00007ab9.bin
a05a158f31e576ce95f0588047348f6ca16c84bf1d8e313129f4e36f980579d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 10120 bytes

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