Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7556a0b56541f7…

MALICIOUS

PDF

45.3 KB Created: 2020-08-31 03:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 550f0349f44296874c53d6af2f93b3ba SHA-1: 6874b6108e87429fbae420272b2596357cce8e4c SHA-256: 2b7556a0b56541f708b040cb0c81c6fbbe5382c3de943c55232bbb106a0324bc
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/wix?keyword=stock+register+template+in+excel'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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/wix?keyword=stock+register+template+in+excel
    • https://cdn.shopify.com/s/files/1/0433/0592/6809/files/flywheel_experiment_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/4000/4501/files/bigepolojipid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1041/files/xegitiri.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/80977235305.pdf
    • https://cdn.shopify.com/s/files/1/0433/0677/8777/files/kupepojutukem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83759083977.pdf
    • https://cdn.shopify.com/s/files/1/0440/8374/0822/files/xujunanegol.pdf
    • https://cdn.shopify.com/s/files/1/0450/1107/5222/files/list_of_all_html_tags_and_attributes_with_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/xenimedewubuguxepajew.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/form_ssa_561.pdf
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/foxijiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/pem_to_ppk.pdf
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/76076328804.pdf
    • https://cdn.shopify.com/s/files/1/0463/0370/7296/files/free_0098_farsi1_serial.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/4446637089.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5316/files/dekojexobepuvu.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_off0000659e.bin
775e1bab9bbdfbace6379b328561b1cc37761f1a53240dd8de5c03ec87f222a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x659E 5276 bytes
font_01_sfnt_off00007770.bin
e8246d8ecdef09c4c6bd51956334057363a2121f971f6ba0b24fca2c6e02bcba
pdf-font-stream PDF embedded font (sfnt) at offset 0x7770 10208 bytes
font_02_sfnt_off00009a1f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A1F 4324 bytes