Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea73bb7c0464054…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 13:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82f7842b01af6eccab57f16d19835ef2 SHA-1: 13c3c804eff2cd5b2ab7fc36326adbec31a86f8e SHA-256: 7ea73bb7c04640543fdf7b9cb54c71a498c34e6c26b3616cc7eb6f88f7d14507
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains the same URL and keywords related to medical conditions, suggesting a lure to a malicious site. The file also contains a large number of other PDF links, indicating a link farm strategy. No scripts were extracted, but the primary malicious behavior observed is redirection to a potentially harmful website.

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=cavernous+malformation+headache
    • https://static.usrfiles.com/ugd/b8c837_a5dd74ee3ad4427f93df57699b33fe1d.pdf
    • https://static.usrfiles.com/ugd/9edd50_e1be9242feb9468389ef83761fb61476.pdf
    • https://static.usrfiles.com/ugd/bb13a2_33da0cf06c044b27a36699cec1d573bc.pdf
    • https://static.usrfiles.com/ugd/544c7e_ad8b7e6c722b446e95ca279494a772c0.pdf
    • https://static.usrfiles.com/ugd/e4ff69_7e2a544c043e454597fcd2e7d82f89e1.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_3153332559d64ac891aae9629404c627.pdf
    • https://static.usrfiles.com/ugd/b8c837_51e18f378204404bb747b8fc34048345.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef293696e40146b081cc655ead63f4dd.pdf
    • https://static.usrfiles.com/ugd/e3c460_89c1e5e8bfe54323897863c8b9164676.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2389/files/80397614828.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0999/files/60848434897.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/58807456088.pdf
    • https://cdn.shopify.com/s/files/1/0440/7292/7384/files/24046971235.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_off00006542.bin
10086d828837ae8fa5d6d86698d9ceebcab0331a1a7accd66ce78155350d8555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6542 5224 bytes
font_01_sfnt_off000076e2.bin
5af7519bd409144a0f199fca5c0c9059fb443a8594ee5d0d797debd273c16a34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E2 10880 bytes

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