Malicious PDF — malware analysis report

Static analysis result for SHA-256 23de6098ebd3f433…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 14:19:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e81646ccc5dd01fc3f39f1dc7cbfd0 SHA-1: b5f72dde249771789f7652ec8cd4646cd50923cd SHA-256: 23de6098ebd3f433c7dce584aa19775f8da8ad5622ec5df3ea0994ae423936bc
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=red+hibiscus+flower+images', which is flagged as malicious. Additionally, the PDF hosts a link farm pointing to numerous other PDFs, with one such link being 'http://zoxevemuv.deloachfamilyties.org/uploads/1/3/0/7/130738732/remoxunabut.pdf'. This suggests a social engineering attack aiming to redirect users to malicious content.

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=red+hibiscus+flower+images
    • http://zoxevemuv.deloachfamilyties.org/uploads/1/3/0/7/130738732/remoxunabut.pdf
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/photo_book_maker_apk.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/dexugivo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6832/6042/files/ardaas_karaan_full_movie_2019_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9763/files/ford_ranger_haynes_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/7878186003.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/zotesibovazidijujuxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/29140563341.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3412/files/brahmastra_maths_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/0939/9192/files/milliseconds_to_hours.pdf
    • https://cdn.shopify.com/s/files/1/0453/3105/4747/files/reportar_averias_ice_costa_rica.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/simple_present_affirmative_and_negative_statements_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/31511981516.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_off00006266.bin
9a618a7c89ebcb4f41d03554ddbd068849bff591618ca3ae2fea39cba239b56c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6266 5676 bytes
font_01_sfnt_off0000759a.bin
c8c6b13d888a726fdbf7279cdb1a2e31830e2b8aebce92f38e4d7567a09991a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759A 10060 bytes

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