Malicious PDF — malware analysis report

Static analysis result for SHA-256 d73ea59e487a029f…

MALICIOUS

PDF

51.2 KB Created: 2020-08-30 04:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a3a7fca85e58d68b1c1a9c7f764e802 SHA-1: ab1a2a26a35b008f6691c391890ab2fac8e4155b SHA-256: d73ea59e487a029f463be63cd6c3ca87da0c3881909a1a3fa7722abc1a71d701
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with multiple external links, including one pointing to a known malicious redirector. The primary malicious link is https://ttraff.ru/wix?keyword=wrothgar+relic+hunter+map, which likely leads to further malicious content. The document body is heavily obfuscated and contains remnants of the malicious URL, suggesting it's a lure to encourage user interaction with the malicious link.

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=wrothgar+relic+hunter+map
    • https://static.usrfiles.com/ugd/1e32c2_42a2220600124b199482f46e0df9ba85.pdf
    • https://static.usrfiles.com/ugd/2e79a6_f00f17efbef34e5899c9a774f960a667.pdf
    • https://static.usrfiles.com/ugd/b56239_f3a426d0b897439084702f2121417dce.pdf
    • https://static.usrfiles.com/ugd/b8c837_a36c8583f62e4a5581e4a3c14d6868a1.pdf
    • https://static.usrfiles.com/ugd/eb5a6a_684320131952435598cf812fa8b719be.pdf
    • https://cdn.shopify.com/s/files/1/0428/9213/2511/files/sosatakug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/15403643898.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/75104745993.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/64093160710.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/javafx_8_css_reference_guide.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_off000089d1.bin
1d7269ae0a5bd72820da890c43aee320bff3aba476a6b1aacacd298713ed64d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D1 5184 bytes
font_01_sfnt_off00009b54.bin
8b8826f46d29ce24dfa30a4fab03dbc2eb6a431f259923142897c756dd364f36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B54 10300 bytes

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