Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c3ceb134adcac9…

MALICIOUS

PDF

41.3 KB Created: 2020-09-09 11:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 011eee490e9020a5e6b3e0ebc5f902e8 SHA-1: a407195c30717470b8aed094c4422857eadc27e5 SHA-256: e2c3ceb134adcac9e8ed81b75758096f12bb36f74573d2874246403c655dc5d7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=magazine+template+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The ML classifier also strongly flagged this PDF as malicious. The document body contains text related to 'Magazine template free' and the malicious URL, suggesting a lure to a potentially malicious website.

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.ru/wix?keyword=magazine+template+free
    • https://cdn.shopify.com/s/files/1/0440/7531/9448/files/fokadenadegas.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/increment_and_decrement_operators_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/9997027824.pdf
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/animation_api_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8912/files/gopilabonorel.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5490/files/primary_assistant_headteacher_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4039/8750/files/48985858736.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/occupations_vocabulary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0463/1166/9917/files/axis_mf_kyc_updation_form.pdf
    • https://static.usrfiles.com/ugd/76dd3d_976c7f6fda09477db20683b19fa8ed3d.pdf
    • https://static.usrfiles.com/ugd/934fc3_ee4e656df19b4ca893807c5e17f35a82.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_573018bb9c6b4d39b451b4aca1fb0762.pdf
    • https://static.usrfiles.com/ugd/ee6770_fc41faf5f640467c9deca061499e898f.pdf
    • https://static.usrfiles.com/ugd/76156b_a0f7da9103d040a28630a9f4352c5c73.pdf
    • https://static.usrfiles.com/ugd/b8c837_cb9e44ca385e449696d4bb10c0f6fc92.pdf
    • https://static.usrfiles.com/ugd/3e7897_652e7f06e7ee448aa87f2e2869cd48ea.pdf
    • https://static.usrfiles.com/ugd/2e16aa_1bbd0bfb200a4bf7baaaa417d8d22a25.pdf
    • https://static.usrfiles.com/ugd/b8c837_e75fb7ffeecc407a85592424d02bffef.pdf
    • https://static.usrfiles.com/ugd/7603ae_5391e61ad99e480e9e503ba2984674b9.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/
    • https://static.usrfiles.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065db.bin
53d3f0c2cf6858d860089862569e25b91eb0f7823b6ffbcc57dbef6188989207
pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 5100 bytes
font_01_sfnt_off00007738.bin
6f46004cca6661df9208095d5db8bb3366d4e47b627dcdb1aaa8f1a5290ab75a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7738 9684 bytes