Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea942e30447ea093…

MALICIOUS

PDF

45.9 KB Created: 2020-08-30 21:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73cc39c6b959ce9ea7fbd62157bf4b0e SHA-1: 189fa36fd1163680a2891243b168165f67611f1e SHA-256: ea942e30447ea0931b7c292e37ec3c9f1944888fae5858fd2cc1d8883ffcfae8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely intended to manipulate search engine results and lure unsuspecting users. The primary malicious IOC is the redirector URL, which is likely the entry point for further malicious activity.

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=en+iyi+karaoke+program%25C4%25B1+t%25C3%25BCrk%25C3%25A7e
    • https://static.usrfiles.com/ugd/20d83a_d352079674614a2199d753c68b413037.pdf
    • https://static.usrfiles.com/ugd/b8c837_506724a12a4b45fea7f9a92acaa957f0.pdf
    • https://static.usrfiles.com/ugd/76156b_8cd49b6595564b05997a8eba6daffd66.pdf
    • https://static.usrfiles.com/ugd/b8c837_99c392296dbf4d24ac4d164e98b1cf7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_71b4bd9af7c34dd595f3b35094a96bbf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3984/1695/files/64570528122.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bokowolexom.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/62844384520.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4331/files/format_photo_arriere_plan_linkedin.pdf
    • https://cdn.shopify.com/s/files/1/0467/9906/1141/files/late_nights_the_album_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/how_to_grow_wings_on_your_back.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/bafavajexitepatinoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/24224066690.pdf
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/encoding_video_for_web.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/meningoencephalitis_pediatrics.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5a181c2bc82456cb8ef9f92aba95de0.pdf
    • https://static.usrfiles.com/ugd/9e41f0_757336543e564176b610c073c60a8254.pdf
    • https://static.usrfiles.com/ugd/3f80ec_f8438f72bb1f4d52a0e35c46ba879286.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_off00006fe9.bin
5c6fa544448dfe8889dd67d2ba6bc0bfa6c5570155e157aa4fbbe07648dc5b89
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE9 5388 bytes
font_01_sfnt_off00008209.bin
83a784705b2c1cb42048570af72f24b31b8846093a4b07260c601d9474838542
pdf-font-stream PDF embedded font (sfnt) at offset 0x8209 12288 bytes