Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadfac4781fcab97…

MALICIOUS

PDF

37.7 KB Created: 2020-08-30 05:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0342f104522ba01ae975f817f4eae4a SHA-1: a066e507e39d0b18b9137b66eaeeac2e051ca060 SHA-256: fadfac4781fcab97ad556c32a858197f5498f324524b1fb273f502a24613c7b8
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a URL associated with malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'Gta san andreas mods installer downl', suggesting a lure for users seeking game modifications. The presence of a large number of external PDF links, many pointing to the same domain, further indicates a link farm or redirection scheme designed to obscure the ultimate destination.

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.com/wix?keyword=gta+san+andreas+mods+installer+downl
    • https://static.usrfiles.com/ugd/097bd5_ca601c1d565342a5a984a84e688b58fa.pdf
    • https://static.usrfiles.com/ugd/238140_a3a8d8192ff946bca5472b22109cf875.pdf
    • https://static.usrfiles.com/ugd/ecec20_cf43b6f37e774bb685ad457a68144ffa.pdf
    • https://static.usrfiles.com/ugd/88a84f_798a1f12a12d47069cc644ab840e1e3c.pdf
    • https://static.usrfiles.com/ugd/868401_c4734f2dfe964575b57b5b819d7dc5cf.pdf
    • https://static.usrfiles.com/ugd/cc14e4_9f6b3016f6714acb84ec88b3ad415d66.pdf
    • https://static.usrfiles.com/ugd/b7ed05_fc74d4ba7a4945ba88d3bfb7fe4e85b0.pdf
    • https://static.usrfiles.com/ugd/cd79e3_ab21f66e2cf14c818ea893079002cc8e.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_a43dd87b552d4f57b0ee61a1ebcbc9db.pdf
    • https://static.usrfiles.com/ugd/067ecb_add812374bc746a8a47af3886178bbc6.pdf
    • https://static.usrfiles.com/ugd/b8c837_da5208c95279464f8ddee75f4edd6cd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f39526450b84a16907df117671e9271.pdf
    • https://static.usrfiles.com/ugd/83b1b3_24ac0ab17f54421d96a5a30ec9d62886.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_off00005628.bin
a80d02641876befdc4e3af173f79f5e0e6a94f0d6ffddc1389ebb883e2954d26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5628 5092 bytes
font_01_sfnt_off00006776.bin
66aad36a3566d36a24fca6412cfb62c65064952d996d1c58e41249542d4178b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 10148 bytes

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