Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3cf6443faacc6e…

MALICIOUS

PDF

47.2 KB Created: 2020-08-12 15:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6451e45254dd325412ae2698b630a6a SHA-1: 07800adb580b9dd83aeb7e9eb884a781a3a7c880 SHA-256: ee3cf6443faacc6e884b35cf5f0d3b12acf24ebf5f8fa8b9cd78ebbfe433e1d6
150 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 redirector service. The primary malicious link, 'https://ttraff.ru/pify?keyword=common+application+of+computer+pdf', is designed to lead users to potentially harmful content. The presence of numerous links, including those hosted on Shopify, suggests an attempt to create a link farm for SEO manipulation or to obscure the final malicious destination. No scripts were extracted from this sample.

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/pify?keyword=common+application+of+computer+pdf
    • http://gexukevek.kaylacountess.com/uploads/1/3/2/7/132740623/kipiti.pdf
    • http://files.leilafletcheronline.com/uploads/1/3/1/3/131379899/1432733.pdf
    • http://files.bullbearkidsbooks.com/uploads/1/3/2/6/132681404/medewesiposade.pdf
    • http://lerere.bendsprinklerirrigation.com/uploads/1/3/1/4/131454012/rizuxenifuweka.pdf
    • https://cdn.shopify.com/s/files/1/0438/6104/9494/files/interview_questions_for_electrical_engineer_fresher.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1110/files/cydia_impactor_error.pdf
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/tlcharger_l_archive_du_journal_algerien_el_khabar.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/82681630000.pdf
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/48405535689.pdf
    • https://cdn.shopify.com/s/files/1/0451/9782/0053/files/christianity_and_african_traditional_religion.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/mathematical_thinking_d_angelo_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/tom_m_apostol_calculus_vol_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/kojajuvafaxufemabisu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1003/8683/files/79209566938.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/febewovazixapi.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_off00007c12.bin
e2e2c5429c57911243d5d063b8a0dee0d4c82738e0eb7dd012a1014086565817
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C12 5028 bytes
font_01_sfnt_off00008d0e.bin
643173cd79a937c0dde489eb8c5db09899fcd6a99179cac3c377c34db8dbe26e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0E 10296 bytes