Malicious PDF — malware analysis report

Static analysis result for SHA-256 878b6e7e32807448…

MALICIOUS

PDF

41.0 KB Created: 2020-08-30 01:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44f5175a60e155acf211564533eaedf SHA-1: 4f3f21baf64c3d81e70681060c62f51fdc4d9f83 SHA-256: 878b6e7e328074483b788e89a7bfa596f20041e26541ea76b6c24a380d1d0447
150 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, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. One of the primary links, https://ttraff.ru/wix?keyword=mine+jean+donaldson, is flagged as a known malicious redirector. The presence of numerous links, including one pointing to malicious infrastructure, strongly suggests an attempt to lure users to harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=mine+jean+donaldson
    • https://cdn.shopify.com/s/files/1/0432/8144/9118/files/83165293781.pdf
    • https://cdn.shopify.com/s/files/1/0431/5480/0796/files/catio_spaces.pdf
    • https://cdn.shopify.com/s/files/1/0439/1229/8648/files/most_common_adverbs_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/36775022642.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://static.usrfiles.com/ugd/54fa57_ffb6a8cb456a4e7fa451b99f06502f99.pdf
    • https://static.usrfiles.com/ugd/a382ee_42b0bd78f7b74b8aa7b2bf538fdecf36.pdf
    • https://static.usrfiles.com/ugd/50c35f_55ef0e664ed643bbb0fe34be5859d19e.pdf
    • https://static.usrfiles.com/ugd/b48b60_63ec8e7840614099ba06fcd9b5d60872.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/tupakevoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/5051100735.pdf
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/22489890926.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_off000056c3.bin
007f127926b8f5634e8a3387ce10165c735f6b656021649bcc290322b18af8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C3 4512 bytes
font_01_sfnt_off0000661d.bin
c9ba62e590b500b2c93c5fcf1e29b57aab984800ed29a3dd30e349edf219077f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661D 10532 bytes
font_02_sfnt_off00008957.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8957 4324 bytes

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