Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f2b3c6c225c9d4…

MALICIOUS

PDF

33.5 KB Created: 2020-08-28 00:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bbfbec6de54285241c0a8106b757a19 SHA-1: 1854209543d37119d466c2788ca16a372de84dbd SHA-256: 99f2b3c6c225c9d430845fdf4de67d47af4b23f73cfa472bed79e938d1927c5a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=school+of+innovation+springdale+ar', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=school+of+innovation+springdale+ar
    • http://files.williamagoodman.com/uploads/1/3/1/1/131163737/8616411.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7414/files/53727677178.pdf
    • https://cdn.shopify.com/s/files/1/0434/3909/5973/files/birds_of_hawaii_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/no_type_rae_sremmurd_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/my_chemical_romance_albums_zip.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/julizoxexobubexaxutom.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/xijade.pdf
    • https://cdn.shopify.com/s/files/1/0429/9292/6873/files/categorical_data_analysis_using_the_sas_system.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/zuwufijujiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4439/files/born_to_race_2011_movie_free.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_off000044ff.bin
cb20c8c65c08a1be58dd0ae8b3974e32d721c28f364b6676caf98e5d8f15aa0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44FF 5580 bytes
font_01_sfnt_off000057e2.bin
95e6fc3c97ec2d48a9b6ca372c785dae39698af29ae9eeafb20232d1ac54ce69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E2 9804 bytes

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