Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcfd3a2b1ca273df…

MALICIOUS

PDF

42.2 KB Created: 2020-08-29 21:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50c5629930b40697e9ab76ca23785ae4 SHA-1: e05dde6ec20a248bbab7b59770cae585b1792fb4 SHA-256: fcfd3a2b1ca273df1bc6245785aa03612b7db01c7193983cbd93bda2c4987849
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of embedded links to other PDFs, indicating a link farm or SEO poisoning attempt. The primary malicious URL is https://ttraff.cc/wix?keyword=radiadores+leroy+merlin. The document body is heavily obfuscated but contains this URL and other PDF links, confirming the heuristic findings. No scripts were extracted from this sample.

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=radiadores+leroy+merlin
    • https://static.usrfiles.com/ugd/b8c837_953e6decbe2a445cbfe6efe51b00db57.pdf
    • https://static.usrfiles.com/ugd/b7082a_82884eae8b5e4c9f992bb4f920a1e996.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6158310df2f4a8096c6c1d960caf0ed.pdf
    • https://static.usrfiles.com/ugd/f63f29_aa0f5a506c964c29a8023cb2017ca54e.pdf
    • https://cdn.shopify.com/s/files/1/0439/3716/9576/files/51293125110.pdf
    • https://static.usrfiles.com/ugd/b8c837_db5ce2301eab471998b6d72e6d83ad04.pdf
    • https://static.usrfiles.com/ugd/e5a943_41bf2d4ce5b34dd8af72a7c9632b43d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_741b7f6a61d14d2093375e09dc85b30b.pdf
    • https://static.usrfiles.com/ugd/a298ce_f040973e6ca34a5c83703dd755217513.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa573429fb52486d9ceffad07794d9fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc9fbe74a5f4431db8ba452051342171.pdf
    • https://static.usrfiles.com/ugd/b8c837_00d44119059045af8d821055747431c7.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_off00006585.bin
cef5746e15244a18d84a93fa8b3ecec6a350091ebf05a05402f95557cf6dc7bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6585 5080 bytes
font_01_sfnt_off000076bc.bin
f037f8559157d2b36986fd1efeaca62e9be1599dbe7ebddb441fcdcac06a5c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BC 11296 bytes

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