Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22592ae3678a7a9…

MALICIOUS

PDF

72.3 KB Created: 2020-08-30 11:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 897bd61f8707f94a3bc822752a902a87 SHA-1: 03af108ff47e9bd1c7eb9f6a4d1ea4389fc996fb SHA-256: c22592ae3678a7a9596d65d3d8d9c000ea93e3196309fbcadc0e6638fefca5b5
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a gaming guide. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to static.usrfiles.com, likely for SEO manipulation or to host further malicious content. No scripts were extracted, but the primary malicious behavior is the redirection to a potentially harmful site.

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.ru/wix?keyword=wow+horde+leveling+guide+1-100
    • https://static.usrfiles.com/ugd/b8c837_9e46784d0e14422c82fdf6e6567ef99a.pdf
    • https://static.usrfiles.com/ugd/b8c837_5abc7c3734184c5c966a4248b73eebd2.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_a1191718bc704b38a70e5ec9f409f695.pdf
    • https://static.usrfiles.com/ugd/b8c837_9021e0a4d19a420d9e7f540be05bb835.pdf
    • https://static.usrfiles.com/ugd/1cfe37_421373b8e9bd4493921d2471724aac2d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c9d57dcd7644dde94f476682f9c551f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2547b1021bf48eeb844fbaefa0c135d.pdf
    • https://static.usrfiles.com/ugd/0049ca_ac288e9bd3f64b99b030067e8dcf7d30.pdf
    • https://static.usrfiles.com/ugd/b8c837_564f6873192c41bcaa576defc9e775d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_963a1f0ead924d0b943671f60847e9cf.pdf
    • https://static.usrfiles.com/ugd/a2d007_0db1749da9b24778aeef674ba40d64ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b1b63a1a5464ea5ad75349c5086a720.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/56211276198.pdf
    • https://cdn.shopify.com/s/files/1/0429/0795/9452/files/66973724773.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/9629173957.pdf
    • https://cdn.shopify.com/s/files/1/0469/0522/9474/files/joseph_murphy_books_free_downloa.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_off0000dcdf.bin
5bec93696e8b946b53f94020186fd230201e9fa0b0f206cb60895edcd75f7f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDF 5092 bytes
font_01_sfnt_off0000ee5e.bin
b29b4f9dc594c4a55ad1b8bae54bf8406b6795e0e885782cabad1a6f8de982fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5E 11212 bytes

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