Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eda214c9e367edc…

MALICIOUS

PDF

40.2 KB Created: 2020-08-17 03:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81ecfe7cac8e506b289b9efea674fa24 SHA-1: 990b4fb7219a0c30d2e88985b28e804cbd94010d SHA-256: 4eda214c9e367edc352f3e12fc655d03845d35d85d7a8ca9d41e8ef03eb9f73e
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 is also present in the document body. The link leads to 'https://ttraff.ru/pify?keyword=powerpoint+template+green+technology', suggesting a lure to download a malicious file or visit a compromised site. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF documents, likely for SEO manipulation to improve search engine ranking for 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.ru/pify?keyword=powerpoint+template+green+technology
    • http://files.theathomeexperience.com/uploads/1/3/1/4/131409135/famupixani-wizamabubuxiro-tilosunon-dinifuvu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3100/1250/files/auditing_and_assurance_services_16e.pdf
    • https://cdn.shopify.com/s/files/1/0445/8138/8452/files/fantasy_football_2013_cheat_sheet_ppr_league.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/world_countries_and_capitals_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0451/9713/1925/files/computer_architecture_and_assembly_language_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4402/8068/files/tidomeribagafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/18263718265.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/wiponiza.pdf
    • https://cdn.shopify.com/s/files/1/0431/4615/0039/files/24179997429.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/cosine_taylor_series.pdf
    • https://cdn.shopify.com/s/files/1/0433/4708/3429/files/646309764.pdf
    • https://cdn.shopify.com/s/files/1/0435/6544/9365/files/68283496298.pdf
    • https://cdn.shopify.com/s/files/1/0450/0642/2184/files/18983998089.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/attached_book_download.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_off00006035.bin
f6daa6c800a8b909be5148ac3abcf00d750901813690df80118791594521e574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6035 5364 bytes
font_01_sfnt_off00007251.bin
155d3c5caeee5bd3482c6e33f26d7895cab2a69d1c8dabe9a54e8c561c50b214		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7251 9796 bytes

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