Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c947e6bb7b0ab6…

MALICIOUS

PDF

34.7 KB Created: 2020-08-28 05:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a4610bfcc7d29c02767869afeda1628 SHA-1: 7ddaff179d8bf69a497c10502e4d21e0ecf10984 SHA-256: a8c947e6bb7b0ab6fa3b7e7489696c2ebffe4ad952d4200b0f1ba3a666323383
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, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.ru/pify?keyword=2007+toyota+tundra+tailgate+parts, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the target keyword and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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=2007+toyota+tundra+tailgate+parts
    • http://turuxob.mgss.com/uploads/1/3/0/7/130739344/dabagadogifovodip.pdf
    • http://sibes.frenchiesofthecarolinas.com/uploads/1/3/1/6/131606289/752912.pdf
    • http://files.nwcapitalconnection.com/uploads/1/3/2/3/132303118/0f3f5630f6017db.pdf
    • http://files.julieclarkbooks.org/uploads/1/3/1/3/131380591/268344.pdf
    • http://files.northliverpoolteachingschool.org/uploads/1/3/1/4/131437308/4a20ce9d.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/baidarka_plans.pdf
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/java_game_programming_source_code.pdf
    • https://cdn.shopify.com/s/files/1/0450/4325/3406/files/figoleginavamuvef.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/fate_zero_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/8852/8035/files/mesuwimurapiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/mr_coffee_bvmc-_tjx36_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/viwapibefuzikin.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/tonibinebejepomunapib.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/fuwoked.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_off00004aa6.bin
08afbf0d2d33fd4f4a2087ff9caebbf065a5b3c55cb38c6bf550d0257a46e739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA6 5488 bytes
font_01_sfnt_off00005d57.bin
0315f0ab96b0cd89ec12cbf773c032506fb7ead0ad50a3050555224ca5898971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D57 9592 bytes

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