Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bac70bb6f4c5356…

MALICIOUS

PDF

32.6 KB Created: 2020-08-30 16:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 926306e4b69a8437553d83b11def3a10 SHA-1: 0508f09763f37548c8ba8e7ba29d2991575e915e SHA-256: 2bac70bb6f4c5356d0a521a5435eea5b2bf5b641f38a1f0d3a736cb033a32380
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, pointing to 'https://ttraff.cc/wix?keyword=beauty+and+the+beast+lyrics+ariana+grande'. The document body, though heavily obfuscated, also contains this URL. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, with the primary one being a redirector. The file's purpose appears to be to redirect users to malicious infrastructure.

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=beauty+and+the+beast+lyrics+ariana+grande
    • https://cdn.shopify.com/s/files/1/0443/1160/9500/files/standard_error_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0434/7871/2472/files/autograph_movie_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/65240939819.pdf
    • https://static.usrfiles.com/ugd/b8c837_799fc3ec7588419b9818c07b63ee78e6.pdf
    • https://static.usrfiles.com/ugd/87d215_79df25a83efe49fc893f3a48aafa42b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_73915070b751498b9cb773e521ecde22.pdf
    • https://static.usrfiles.com/ugd/b8c837_64602f17253746b2894340bece0bc7dd.pdf
    • https://static.usrfiles.com/ugd/eaf48f_fa2d7c810aa5412fa661c46a60f76e5f.pdf
    • https://static.usrfiles.com/ugd/76b6de_db3424980fb94e1abad287b528315ec2.pdf
    • https://static.usrfiles.com/ugd/b8c837_e81dcfa48751459ab4ed4dbbcf9b34d7.pdf
    • https://static.usrfiles.com/ugd/09273f_8e0801127e9543db881f049c71bc575a.pdf
    • https://static.usrfiles.com/ugd/0d2908_c98d7c6e0c1f42f191c410eeb15642ae.pdf
    • https://static.usrfiles.com/ugd/136d07_e7542f6a891c431a9288de8cd829e7de.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_off000042a7.bin
6b1aa6d653e1182b295edfd71fb55f5ab5fb8e25f4677204c05aa77666dfddcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42A7 5492 bytes
font_01_sfnt_off00005542.bin
8744614b428dbfbb3cb0cfbbe136812aeb6b0a74701dc85f02b1b69cd82440ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5542 9428 bytes

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