Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea787386d189d2b…

MALICIOUS

PDF

38.2 KB Created: 2020-08-10 09:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d2ac9642a3b2a06a79111e81e084dae SHA-1: 09f034df08c875572c4b8d3fd12fa08e64d83985 SHA-256: 7ea787386d189d2b3efbf2cc2fba3ebf2e5f4d5a2a5cabb37e7589b11afb05e5
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, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting the document's primary purpose is to distribute links to potentially malicious content. The presence of the malicious redirector URL https://ttraff.ru/pify?keyword=altsaxophon+noten+pdf further supports this. 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.ru/pify?keyword=altsaxophon+noten+pdf
    • http://files.millerptorlando.com/uploads/1/3/0/8/130874257/redefifiguweve_jelajenor.pdf
    • http://files.richardmerrill.net/uploads/1/3/1/3/131383681/mawifojojerareluket.pdf
    • http://nadexasom.carolgalais.com/uploads/1/3/1/4/131483281/7ad673da6de4fd.pdf
    • http://files.musicwithflair.com/uploads/1/3/0/8/130814636/zitewoso_mojanuf_nesodar_popenedanavo.pdf
    • http://files.goldenvisionsdesign.com/uploads/1/3/0/7/130775737/7060930.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/selulowupipixuru.pdf
    • https://cdn.shopify.com/s/files/1/0438/1927/0301/files/tecmo_bowl_passwords.pdf
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/52614679319.pdf
    • https://cdn.shopify.com/s/files/1/0431/8334/1728/files/4399203323.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/tapakujelulidoxera.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/kalomirixewezibidujan.pdf
    • https://cdn.shopify.com/s/files/1/0435/4034/9082/files/law_firm_management.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/medical_certificate_format_for_jexpo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/23220376471.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/tom_m_apostol_calculus_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/luvikofoloralenuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/87792704853.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/20176203316.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://cdn.shopify.com/s/files/1/0434/8710/1094/files/luvikofoloralenuv

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058c7.bin
be21b1062d0a52b8c737e33208088607afa7633368d13b6b6d66a5dea0915091
pdf-font-stream PDF embedded font (sfnt) at offset 0x58C7 5092 bytes
font_01_sfnt_off00006a20.bin
d61571391cf99874d68550bd5656509d14bc7e653528982a3410dae831bda187
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A20 9548 bytes