Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0ab51c1db96d9d…

MALICIOUS

PDF

43.0 KB Created: 2020-09-06 04:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5480d338611ab0c9fefb8d3031b93436 SHA-1: 70ca415bba2f8273976208b8924dbe2f3e9ed78a SHA-256: 8c0ab51c1db96d9d19bda9cf9cfe3b51bff24380a6acb47ac5295bbb65af14a1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the text "Attention to detail questions and answers" and a URL pointing to the malicious redirector. This suggests the document is a lure to redirect users to malicious content, likely for phishing or malware distribution.

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.link/pify?keyword=attention+to+detail+questions+and+answers
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/nirekuxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0352/6820/files/espn_api_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/4912/2983/files/height_badhane_ke_video.pdf
    • https://cdn.shopify.com/s/files/1/0432/0120/0289/files/zosowiruvopukirexulikoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1374/files/8543012432.pdf
    • https://static.usrfiles.com/ugd/ddb60a_f51707e6f26f48e88488b4e15c640b87.pdf
    • https://static.usrfiles.com/ugd/de3d83_f38f462092c942a582e1db400453d776.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_db3a3798472a44f8b3b7ff230fbe928e.pdf
    • https://static.usrfiles.com/ugd/b8c837_82ca98d220124fa3a1cbac718eb95ff2.pdf
    • https://static.usrfiles.com/ugd/80c1db_1426ead9868745639395d3a43d00f47a.pdf
    • https://static.usrfiles.com/ugd/fbcb80_cd4d3cf7d8ba4eaba4aa5dd6f86a8448.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/blank_page_html.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0236/files/amaravati_kathalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/359870716.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/wedarusunok.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_off00006ba1.bin
b88e333b4ca5b42d4ccb2f1c927f7ca2d645fe0525eb57f428865e23fa96da6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA1 5024 bytes
font_01_sfnt_off00007cd1.bin
0dfcc75c8003687db3b9b05116571717bc2ce2698a5dedb0fdf0ac3159f964be
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD1 10068 bytes