Malicious PDF — malware analysis report

Static analysis result for SHA-256 b962687d18400113…

MALICIOUS

PDF

42.8 KB Created: 2020-08-29 13:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6adf875a15472778619a672439e6b880 SHA-1: ace2c4ccca763cad7f897a1171fc0471892e9953 SHA-256: b962687d184001136b34292f98136bd79e38c2f39ad8567e84e51acf8bf8a90b
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 static.usrfiles.com. One critical heuristic firing indicates that a link within the document points to a known malicious redirector at ttraff.com. This suggests the document is designed to redirect users to malicious sites, 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.com/wix?keyword=encountering+the+new+testament+3rd+e
    • https://static.usrfiles.com/ugd/b8c837_b7cc99874ed64601ab3f186fd024d79d.pdf
    • https://static.usrfiles.com/ugd/b8c837_70daa1f1fdf1455cbc981c6cfc1217fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fb27e2ed7e4acbb78dbc4b42777eef.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/bug_bounty_field_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/corel_draw_x7_activation_code.pdf
    • https://static.usrfiles.com/ugd/b8c837_21299698ec9846c19e961adc3ac3e058.pdf
    • https://static.usrfiles.com/ugd/b8c837_03fabe0c4f734b85b60c8473cbeac064.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e8dad06ab114994a11c46421c81dde1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4bd68ce7698407d8fe4d5c0e9747762.pdf
    • https://static.usrfiles.com/ugd/b8c837_61a8fd9d557f4068bb5e783080b20db6.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/22371493781.pdf
    • https://cdn.shopify.com/s/files/1/0428/6346/0508/files/defisijesibavulesijegimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/amelia_jane_books.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_off000069be.bin
148484cf16e51ee5340cd8b6a9fb8d3c25f002ced14cc3cf7efae9403e3183fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BE 5536 bytes
font_01_sfnt_off00007c73.bin
116ca0adc7290a8872a269e02794bcadedf489b798da86e020c2a827fdb5b4f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C73 9972 bytes

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