Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e1f0e80afaf242…

MALICIOUS

PDF

67.2 KB Created: 2020-08-30 00:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8db1c6e3972d0e10b4e7b2d1adf2d4af SHA-1: 6ab9ef9d97730a2e880fcac7eb9d14fc50ba8c03 SHA-256: 37e1f0e80afaf242909871e4fb7228fc4d587de9868b101ccce8c78efdf91768
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 static.usrfiles.com. One of the primary links, https://ttraff.com/wix?keyword=neverwinter+starting+guide, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to "Neverwinter starting guide" and the malicious URL, suggesting a social engineering lure to drive traffic 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/wix?keyword=neverwinter+starting+guide
    • https://static.usrfiles.com/ugd/e2f7e1_6b938aeff95e42e8b6ad23b0ee2d2141.pdf
    • https://static.usrfiles.com/ugd/b8c837_0293ed1d42d642e9af2d33260aeb818b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cf667b027d048ed83fedcfa84e3f7d2.pdf
    • https://static.usrfiles.com/ugd/98857b_647265dca31d4c87896a5ec94411216c.pdf
    • https://static.usrfiles.com/ugd/0049ca_de4e0f900f8e42a1a0442ee7af03a9f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_d89f4c1daefa4a51ba6be8fbc032956c.pdf
    • https://static.usrfiles.com/ugd/b8c837_515eaca7ad8d4dcc94d13af5426e78b9.pdf
    • https://static.usrfiles.com/ugd/1849a1_16da51e6bbde40ab900067cad6caeaa5.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/mikamepiwifefirixivuse.pdf
    • https://cdn.shopify.com/s/files/1/0435/2308/0344/files/united_airlines_travel_agency_information_center_website.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/22179869276.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/worujuluwovujisubed.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/77694493224.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/54572668869.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_off0000c9af.bin
e36176f1a3c975b7e731f203cd7aca76ffc4defcacace9e7990873ace7040759		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AF 5080 bytes
font_01_sfnt_off0000db1c.bin
2bee7c300f4ea17c9fd97c239b36a7d55beae0c6ad2072d63acfe2c73a502b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1C 10832 bytes

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