Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c470e3ee8d29b33…

MALICIOUS

PDF

48.3 KB Created: 2020-08-08 21:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77c3185edfa22c0602c569332f9b9e33 SHA-1: de0253c0dfdee505d3d6c319c39928980bfa0c1b SHA-256: 3c470e3ee8d29b33cac0e6bc3472bc4026bc85037b1ab2c8a395003722c67b6c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment 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 critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=membrane+potential+physiology+pdf. This suggests the document is designed to redirect users to malicious sites under the guise of providing informational 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.com/pify?keyword=membrane+potential+physiology+pdf
    • http://files.simply-creations.com/uploads/1/3/1/3/131381607/fudidilakuvekepewug.pdf
    • http://puwugu.atonewellness.com/uploads/1/3/1/6/131636612/572269.pdf
    • http://buximu.josezayasdirector.com/uploads/1/3/2/6/132695569/5927961.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/mitchell_labor_time_guide_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/pijikawudojij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0439/files/angiogenesis_in_wound_healing.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/82634919786.pdf
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/the_magicians_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/52633260021.pdf
    • https://cdn.shopify.com/s/files/1/0435/9559/5938/files/xonotowuzipefasejeralax.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/nojokijividizipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/edit_content_in_word_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1273/files/napupowekiwadexukub.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_off00006306.bin
567f9ecca405ce681a5b863a23b167aaad4eaf50e90ac287a2a8c14d5d0d332f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 5492 bytes
font_01_sfnt_off00007582.bin
bf638ea857efcb2516727f366f61f251529ff2b00d3ec89f175df377aac21056
pdf-font-stream PDF embedded font (sfnt) at offset 0x7582 15776 bytes
font_02_sfnt_off0000a634.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA634 4324 bytes