Malicious PDF — malware analysis report

Static analysis result for SHA-256 2787783ed418b490…

MALICIOUS

PDF

89.8 KB Created: 2020-08-30 05:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9faccd3c5b1ebd5b82cebd5e1a6d319a SHA-1: c7694a7982f81bcfb1ff58dfa38c1d547dcf9cd9 SHA-256: 2787783ed418b4906fe2b35e3d9ce3443a188dfc177a6cda1195a89bd5a0afee
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The link points to 'ttraff.ru', a known malicious domain. The file also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting a broader campaign to distribute malicious content. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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+disc+priest+guide
    • https://static.usrfiles.com/ugd/b8c837_3d6b61e60e3f448f8a4c378df59dd932.pdf
    • https://static.usrfiles.com/ugd/38bf1f_332da158df5d473db79043cd17dd401d.pdf
    • https://static.usrfiles.com/ugd/b8c837_92eaa75140484a6493d9ee34bbaab957.pdf
    • https://static.usrfiles.com/ugd/d55797_24d6dcaab3ba495080906e14209be268.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6396/files/63283860773.pdf
    • https://cdn.shopify.com/s/files/1/0433/2165/5464/files/articles_on_equity_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/97747840586.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/87342975065.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://static.usrfiles.com/ugd/b8c837_42c352870c6d464aa2ba5c4fa26692ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_65ba4661c4114ae5b19122fcf15efaec.pdf
    • https://static.usrfiles.com/ugd/b8c837_d444418520d14a84a5d78672c35875bc.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e5f.bin
342ea2661ff46eb1c41b56f1bccf4b8a193035647a6f9bc3068d053a3a0ddff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E5F 5104 bytes
font_01_sfnt_off00011fed.bin
33a6ee52302e4ea94e11863ef4e645f039115a5e6d492d7dde99611d2981cdaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FED 10864 bytes
font_02_sfnt_off0001453f.bin
37e7e7e9114bd13ff8332e6897528b8343bfbb4b2dd84d96d31ee0d9080a0a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1453F 16096 bytes

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