Malicious PDF — malware analysis report

Static analysis result for SHA-256 3daca218764b8113…

MALICIOUS

PDF

58.6 KB Created: 2020-07-28 06:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cfdfda1e16353a9be1008521a441cac SHA-1: 2cdcc4a807044e3b5f80a8430a0b7b9eacea8043 SHA-256: 3daca218764b811399fa12b0724367a94eebd1fd2b723a5acd6e1e4a1fc6bbce
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one heuristic specifically identifying it as a PDF link farm. One of the embedded URLs, 'https://ttraff.com/pify?keyword=absorbed+dose+pdf', is flagged as a known malicious redirector. The document body is heavily obfuscated and unreadable, providing no further context.

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.com/pify?keyword=absorbed+dose+pdf
    • http://files.columbiacountymhc.com/uploads/1/3/0/7/130739789/vamona.pdf
    • http://files.casa-de-colores.com/uploads/1/3/0/7/130776162/1873473.pdf
    • http://files.designwithwisdom.com/uploads/1/3/0/8/130873983/tazil.pdf
    • http://files.designwithwisdom.com/uploa
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/sotuwoterubogu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/61998768286.pdf
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/22716437969.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/pedataratufer.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/61779554752.pdf
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/2565928838.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/rexonimetosafoxila.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/setapikukogebofigatetoku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/1454380170.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/21109039709.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/zewafi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094b0.bin
4485aa587862293483a93aa5d0fc818b1a46cd30326725637452d89b06095423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B0 4476 bytes
font_01_sfnt_off0000a3da.bin
1f506e844a163351a743ae993179c91b252202cb2833bbda8173e68e7fbdbdf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3DA 10972 bytes
font_02_sfnt_off0000c89d.bin
03960e94341ab841137cbe6197103fffd30a7fafefedd10e64b418088fbffec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC89D 16088 bytes

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