Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb98170c884c334f…

MALICIOUS

PDF

40.0 KB Created: 2020-09-06 11:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57a14187e7e65406377e276329734ff0 SHA-1: c6cf8e637f1ead500bc4f113564409071bf41b06 SHA-256: cb98170c884c334f44fa95aebc8b27d1bfe1ecea89f4977e23692623034544bc
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.me/wix?keyword=maytag+commercial+laundry+washer+manual'. This URL is presented within the document body, disguised as a link to a 'Maytag commercial laundry washer manual'. The file also contains a large number of embedded links to Shopify domains, many of which are likely part of a link farm to improve search engine ranking for malicious content. The primary malicious IOC is the redirector URL, which is designed to lead the user to a harmful destination.

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.me/wix?keyword=maytag+commercial+laundry+washer+manual
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/ragowagasulexedave.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/solving_linear_equations_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/converter_to_word_offline_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/maccready_affinity_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1420/1250/files/amazing_grace_voice_and_piano.pdf
    • https://cdn.shopify.com/s/files/1/0450/3299/7022/files/more_agile_testing_lisa_crispin.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/gameboy_emulator_for_iphone_x.pdf
    • https://cdn.shopify.com/s/files/1/0462/6710/5429/files/84377150394.pdf
    • https://static.usrfiles.com/ugd/be19e1_6d50eb74357a43b4bb0d4682f8bb7ab4.pdf
    • https://static.usrfiles.com/ugd/b8c837_627f96bf1c454a9d8d855841d8b2b7e2.pdf
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/31750013951.pdf
    • https://cdn.shopify.com/s/files/1/0463/2490/8193/files/sifipigixewegowirifotulad.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_off00005e60.bin
504fb1d51bb450bc7e42c65c63fdd8b22b8bdc82dceb243e7f4a41a66895fd51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E60 5552 bytes
font_01_sfnt_off00007138.bin
206f42faab1416a2dda97b6e0603555617f69ce4ff2d683b24c0a4ba4a68e8e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7138 9936 bytes

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