Malicious PDF — malware analysis report

Static analysis result for SHA-256 26035b54f2fddd54…

MALICIOUS

PDF

57.8 KB Created: 2020-08-29 12:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c8dfaae7477a682006b76143fd52bd8 SHA-1: 56728eead75e020f48f5222f88b34936c7bb3777 SHA-256: 26035b54f2fddd54ab7fcd1a707f7a74110f566f6e8ac7879e175b0b484af24a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=addis+ababa+condominium+40%25252F60+winners+2019'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, reinforcing the lure. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=addis+ababa+condominium+40%25252F60+winners+2019
    • https://cdn.shopify.com/s/files/1/0430/8303/8881/files/83948941101.pdf
    • https://cdn.shopify.com/s/files/1/0461/8924/8663/files/sourcemod_1._9.pdf
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/belt_conveyor_book_mulani.pdf
    • https://cdn.shopify.com/s/files/1/0431/1046/5698/files/10858537361.pdf
    • https://cdn.shopify.com/s/files/1/0461/1692/9700/files/dulozepukowumukinanego.pdf
    • https://cdn.shopify.com/s/files/1/0428/0785/3223/files/sample_blotter_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2505/files/kewubuwugemawujosexozosu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7882/6661/files/oracle_sql_interview_questions_and_answers_for_freshers.pdf
    • https://static.usrfiles.com/ugd/b8c837_f20e34dc86bb4b579029d044e266d776.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8813a76683e41758b0793fc6c1a0021.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8df395f89ca44448552ca8b3ca96768.pdf
    • https://static.usrfiles.com/ugd/b8c837_b138767270c64068940a98cd6309e082.pdf
    • https://cdn.shopify.com/s/files/1/0438/3683/3952/files/33828158254.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/comparison_of_adverbs_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/15935630044.pdf
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/tuvemokoboxapokaje.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_off0000664f.bin
d2bb986cc93ba3add34f2727c0e288b4088d46fa20b3135d556ff895d26471c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x664F 17096 bytes
font_01_sfnt_off00009528.bin
32d717a5b68540c2d7218d3a912d0e7abb59c9a027484e49603f361333e47a58
pdf-font-stream PDF embedded font (sfnt) at offset 0x9528 6032 bytes
font_02_sfnt_off0000a9ad.bin
8bff19e4ced6ce7e8f4602a5d3d53cd40f77f623c02ceee78be576e50c4e8387
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9AD 15420 bytes