Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2d3c458e5e7a5e…

MALICIOUS

PDF

41.1 KB Created: 2020-09-09 11:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46185c46f1846e596cd3b822f2e7ef28 SHA-1: 620503ae8bc3653c037a3fb305c9652e1557cae9 SHA-256: cc2d3c458e5e7a5e2af9f1f8790c10d32a42a4a13a4260a37a95cadde8ee1959
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. It also exhibits PDF_SEO_LINK_FARM behavior, embedding numerous links, with the primary malicious redirector being https://ttraff.link/wix?keyword=bubble+sheet+mask+boots. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to a malicious site disguised as a document. No scripts were extracted, limiting the analysis of direct execution behavior.

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.link/wix?keyword=bubble+sheet+mask+boots
    • https://cdn.shopify.com/s/files/1/0432/4546/9858/files/astm_a53.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/fimabikokupez.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/center_button_in_form_bootstrap.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5240/files/54717730607.pdf
    • https://static.usrfiles.com/ugd/d6b5da_32ac44176dd7429fa5daa4f382de120d.pdf
    • https://static.usrfiles.com/ugd/2813e2_9d6b3cec6c274903b4e103cfe7c33ac1.pdf
    • https://static.usrfiles.com/ugd/c4b402_a7179d475e4940b4b682b084e63b68f7.pdf
    • https://static.usrfiles.com/ugd/3e9e83_0fa15970dece4fcfbf27a67267bd17a5.pdf
    • https://static.usrfiles.com/ugd/6a7407_26e3e094679443fda162e7bbb7918d84.pdf
    • https://static.usrfiles.com/ugd/15d534_34821e38540642a9840455f61db811e1.pdf
    • https://static.usrfiles.com/ugd/dd4472_c42f0ef4872846769d67fa1f9c8f5c4d.pdf
    • https://static.usrfiles.com/ugd/d2751c_0c84f1d709fd431581c091ceb4a5dedc.pdf
    • https://static.usrfiles.com/ugd/0dd040_b5874e20cf074be885e2e5d5330fe713.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_off00006216.bin
a71684010e7d0a754e9914615f881c54b7c4787f2e05d8d3f4ca87e6a8cad772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 5080 bytes
font_01_sfnt_off00007333.bin
4ab3c20045e6c8b7f95f5bb3c9157984dee54116d95eb163b4a2f6fc620d2fa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7333 10768 bytes

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