Malicious PDF — malware analysis report

Static analysis result for SHA-256 41094db501d3338b…

MALICIOUS

PDF

39.1 KB Created: 2020-08-23 13:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d4cbcd203cd2fca0de1c333d928990e SHA-1: 9fb504bbbd74756d1b24cfc75607e8d53fadcc2d SHA-256: 41094db501d3338bfe05f5ca455d76f4ea143e253afb1b0bb5ea0123e6296212
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 external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and a title suggesting a lure. The presence of a link farm and a malicious redirector indicates a phishing or redirection attack.

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.cc/pify?keyword=funny+riddles+with+answers+ppt
    • http://wojogof.lonestarfloor.com/uploads/1/3/0/8/130814687/sowilojijelapo-wawoxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/61357731000.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75877947267.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/standard_engineering_drawing_sheet_size.pdf
    • https://cdn.shopify.com/s/files/1/0461/9878/4149/files/characteristics_of_information_technology_system.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/66605590658.pdf
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/beer_s_law_lab.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/kevudumituwex.pdf
    • https://cdn.shopify.com/s/files/1/0428/5025/5014/files/gurobi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/gibakijoduvibovuk.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_off00005c57.bin
8a7c1a85eb040adf28084d4141763c164bbd8777ca447efa0e9e2418e7473c1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C57 5196 bytes
font_01_sfnt_off00006e0f.bin
030f7fd32a0fadbf6f6731a9b98c44a5b73544c6482491821fa8ab40ad7202ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0F 10008 bytes

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