Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf13a3f3f3a7d96…

MALICIOUS

PDF

40.2 KB Created: 2020-08-31 15:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a979b0fd258346c91ceaa811d4fab27 SHA-1: 67557442fb83b06d9e97b4321da8a3c1729520f0 SHA-256: baf13a3f3f3a7d9607a9fb4d326cc65a897a95f7acd13fd957c4a74ac285c77d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wix?keyword=ames+lettering+guide'. This URL is likely part of a phishing or malware distribution campaign. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a network of sites. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

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=ames+lettering+guide
    • https://static.usrfiles.com/ugd/b8c837_7bcd9a625cd74dc1851783277a9d238b.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc485f64a9e4057b15f325d968dca48.pdf
    • https://static.usrfiles.com/ugd/affaa6_613eee684c224dad80ab2a48521a5a5d.pdf
    • https://static.usrfiles.com/ugd/5a1791_b56cfc5d62fa425882dc26dafdf808df.pdf
    • https://static.usrfiles.com/ugd/837d34_924046144ef7458e80fda8b75df721bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2b4068ae52a41aab9799806add3600c.pdf
    • https://static.usrfiles.com/ugd/a91264_687232622abf412e8cd7384dd37bf488.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5dc56fb56bc44e4addb632d64f5d847.pdf
    • https://static.usrfiles.com/ugd/f46427_dc0c155feb654e9eb6b923f58479b024.pdf
    • https://static.usrfiles.com/ugd/83f04e_bc7ac18e840c40968c0fdd0df1d50b5b.pdf
    • https://cdn.shopify.com/s/files/1/0435/8209/5519/files/14287105816.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/begefaborexom.pdf
    • https://cdn.shopify.com/s/files/1/0437/6612/0609/files/15222862315.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_off00006079.bin
2b24a7d3107ed348cda07607e2ee9a7b2def665bdb3bdf6e0568e8d686baa47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6079 4924 bytes
font_01_sfnt_off00007122.bin
b8aeb3a55d07e977d34c9ff4221051d58d45c8677bcfb16c251d31bcb7444edf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 10364 bytes

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