Malicious PDF — malware analysis report

Static analysis result for SHA-256 37404e1b39484405…

MALICIOUS

PDF

44.2 KB Created: 2020-08-28 23:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3b5ade6859ae9d1bdf4b462a6595fb1 SHA-1: f257e45be7dd04c27f4a0e37b9ab892e83ba5cbb SHA-256: 37404e1b39484405377aaa9fe8e07934530f6be3a95c4a02f7a057c928b17831
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged for containing a malicious redirector link and a link farm. The primary malicious URL, https://ttraff.ru/wix?keyword=arka+bah%25C3%25A7e+ah%25C5%259Fap+istinat+duvar%25C4%25B1+fiki, is identified as a known malicious redirector. The document also contains numerous links to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation or to obscure the true malicious destination. The ML classifier strongly supports the malicious verdict.

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=arka+bah%25C3%25A7e+ah%25C5%259Fap+istinat+duvar%25C4%25B1+fiki
    • https://cdn.shopify.com/s/files/1/0462/2480/1946/files/likafalofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8791/files/campaign_finance_reform_amendment.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/eliseu_martins_livro.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9950/files/39081595215.pdf
    • https://cdn.shopify.com/s/files/1/0433/4364/2773/files/71837360901.pdf
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/75436513782.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ac3c43eabc7466497d2b29eb1063d4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dd4ad6a5c9541858a7f45dee7796066.pdf
    • https://static.usrfiles.com/ugd/b8c837_20ffe5153bf840dda99856ec899bec2e.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/8533637227.pdf
    • https://cdn.shopify.com/s/files/1/0463/2038/6205/files/aambala_video_songs_isaimini.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_off00006005.bin
ef2b5e9e39a53972626ea20266954fcbfea97928e5f4718bdcd679a3650029c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 5584 bytes
font_01_sfnt_off00007250.bin
f4f1d34351fd9b0ce40471a2040ae71983a19e4aa103102035567d9da3ecbb48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7250 10568 bytes
font_02_sfnt_off0000932d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x932D 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.