Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdac75ee9f21a617…

MALICIOUS

PDF

39.6 KB Created: 2020-08-14 19:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6682112edd2c8653571a2a2e02cca0fa SHA-1: 7dabf4b3112148ac9748abf4b1f0cae08d18f588 SHA-256: cdac75ee9f21a61776f0d4538099b0ab6f60a83bc6b562f7ef3a9aeb1e94b178
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 Shopify domains, but one critical link redirects to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'process of mummification worksheet' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary attack pattern involves tricking the user into clicking the malicious redirector link.

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=process+of+mummification+worksheet
    • http://files.dongshiart.com/uploads/1/3/0/8/130874090/6820765.pdf
    • http://files.jackiedeephotography.com/uploads/1/3/1/1/131163953/sefofejos.pdf
    • https://cdn.shopify.com/s/files/1/0452/7154/8066/files/reservation_in_education_system.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/wobividutaxovewa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/51151200031.pdf
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/chief_financial_officer_duties.pdf
    • https://cdn.shopify.com/s/files/1/0439/8078/3774/files/pdf_editor_portable_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/15110450280.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/hydraulic_broaching_machine.pdf
    • https://cdn.shopify.com/s/files/1/0430/3087/2215/files/83510211820.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/degajamuminisat.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/icse_physics_class_11_textbook.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_off00005d4d.bin
dbf9e4f9eb6ca01b9b6ec9de0ad35ecfe2a66acac0c931b4b2411af37c2425e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4D 5244 bytes
font_01_sfnt_off00006efd.bin
0c6adf638fc593e32ffa1fbe658b60defdbe72de9bd2317a541a35bcd02d9372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFD 10120 bytes

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