Malicious PDF — malware analysis report

Static analysis result for SHA-256 230b66c16f90cb31…

MALICIOUS

PDF

50.5 KB Created: 2020-08-30 05:55:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 696d026b042ee539425cad7d37e3e9f1 SHA-1: 6418b27359a8f43f6092daee689eb529eea9d6cf SHA-256: 230b66c16f90cb31e184351896e74d0471d97f7f9abf6b91602109356d5c677f
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Wilcom embroidery studio e3 kickass', suggesting a lure for software piracy or a cracked version. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to distribute the malicious payload. The primary IOC is the malicious redirector URL.

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.cc/wix?keyword=wilcom+embroidery+studio+e3+kickass
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/fazesus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/bosudororiji.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/lenusubopinagevozob.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/jibunidilero.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdf
    • https://static.usrfiles.com/ugd/97aff7_7a6327d38d5340229046c3065705195b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9a476d06f4149d8891dea33996ddab3.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fdf14fbccdf47169eb3b1d1f1c95a63.pdf
    • https://static.usrfiles.com/ugd/432b07_0f49772837d94397aaf07896688bdf88.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/87323828233.pdf
    • https://cdn.shopify.com/s/files/1/0432/9055/8622/files/zowonemapuxexiwot.pdf
    • https://static.usrfiles.com/ugd/b88e3d_f1e65a311ef940e9aa2cc48e9a5d162e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0520b94c0f5e4d7682e4512e462c7469.pdf
    • https://static.usrfiles.com/ugd/b8c837_54006e7f050844a7b4ee4e91129b97e3.pdf
    • https://static.usrfiles.com/ugd/de60da_9a28f0a28ee6434ab73a216aff50c502.pdf
    • https://static.usrfiles.com/ugd/b8c837_c27ea534c20446678035b64f8e3b871f.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_off00006b1e.bin
f100b50a1583debaab7bc6a2d120df1ed2a74936d288cbc5424a479a921c769a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1E 5568 bytes
font_01_sfnt_off00007df8.bin
0ae0aa4e089c598c71209f263b8bc9ad9508e8b3df56ce1cad5b7acdcd9584b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF8 12864 bytes
font_02_sfnt_off0000a7df.bin
df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DF 16060 bytes