Malicious PDF — malware analysis report

Static analysis result for SHA-256 260d596870f655f3…

MALICIOUS

PDF

43.3 KB Created: 2020-08-19 11:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c046b33cfab420ef0eef22be417eaaa SHA-1: 33511d7f890f22f1b4ad15986d53716ea40be01d SHA-256: 260d596870f655f3f2aaba1091b7663c420ba2309472cd19dc9308f71087f12b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though partially corrupted, contains the target URL, suggesting a lure to a page about 'nba awards 2018 full show'. The primary attack vector appears to be social engineering via a malicious link within the PDF.

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.ru/pify?keyword=nba+awards+2018+full+show
    • http://files.yanktonfamilyvisitation.org/uploads/1/3/1/4/131483445/3125439.pdf
    • http://files.zaaakart.com/uploads/1/3/1/3/131380343/fuzug.pdf
    • http://basos.alphawomenscentermn.com/uploads/1/3/1/4/131437119/6889589.pdf
    • http://files.rutherforders7.com/uploads/1/3/2/7/132710671/cc46728cb2009.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/saxagivabixumusiru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0432/0945/7825/files/sizisupexepekufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/21839688317.pdf
    • https://cdn.shopify.com/s/files/1/0434/4823/8241/files/bapana.pdf
    • https://cdn.shopify.com/s/files/1/0436/6339/2921/files/4681194524.pdf
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/26386641142.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1109/files/69125386051.pdf
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/porodevegipediwilozukuvo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/chaim_potok_zebra.pdf
    • https://cdn.shopify.com/s/files/1/0451/6688/7061/files/artificial_neural_network_matlab_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/virafozifet.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_off00006a2a.bin
6641c95a35e7cf4f567ed84c19f5c79862d2ca70ee502375d0268064faa1ed59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2A 5716 bytes
font_01_sfnt_off00007db3.bin
318d375ea7dcdf14630cfb89d96ac290a652f722148f7fa359cdca104533e160		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB3 10112 bytes

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