Malicious PDF — malware analysis report

Static analysis result for SHA-256 898358f0663bb660…

MALICIOUS

PDF

69.4 KB Created: 2020-09-02 12:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f870940ed739575fcedea844625e836 SHA-1: 520d93885eac76dd64fab6f6889b3c87655675a5 SHA-256: 898358f0663bb6601291486134b712bcf653ff3fc7411b94cbf2b113db223367
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous URLs. The primary malicious redirector URL is https://ttraff.club/wix?keyword=d%2526+d+5e+character+sheet+in+excel, which is designed to lure users to potentially harmful content. The presence of a large number of links hosted on cdn.shopify.com, many pointing to seemingly random PDF files, further supports the link farm classification. The file's purpose appears to be 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.club/wix?keyword=d%2526+d+5e+character+sheet+in+excel
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/sefuxufex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/5909347251.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/74512372450.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/46513821464.pdf
    • https://cdn.shopify.com/s/files/1/0446/2074/2819/files/33294927863.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4785/files/45554525003.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/60120433779.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce009ef657864d7f8b0a84db86214aba.pdf
    • https://static.usrfiles.com/ugd/735189_7b79fa1a21cd4df1ac19f0d9824490bd.pdf
    • https://static.usrfiles.com/ugd/0047a4_0384bd3b0433493298ab17a55c3801c6.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f42.bin
4807b355aa430a50c984a863af6f5beb01f6b033167930cb4bfeafc5d35a917d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F42 6596 bytes
font_01_sfnt_off00007f88.bin
3d18dca7e3151ab78b523ac4104e86b88c6789bd7feb2b9d7711bf9cdfa03466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F88 3148 bytes
font_02_sfnt_off00008ac8.bin
bb1702a9e9b617346157f9ea6f36cc14559c37d4a4a2cf683ebd57dce9d2c082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC8 4156 bytes
font_03_sfnt_off000098b7.bin
22cf2645e644228cb3992635e853a9b64b102c5d616e8bee956ef549ad92acbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98B7 6224 bytes
font_04_sfnt_off0000a7dc.bin
ac8e1aa9129543116dbaa03657de220c3253d128f91fe3ae8eb51a87a5f19a04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DC 20452 bytes
font_05_sfnt_off0000e2ea.bin
27ef1bd6c15038182643e9e91e5443894b7dd7fc1cf77d45effee4237fa9ede2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EA 16304 bytes
font_06_sfnt_off0000f8ab.bin
bf2d8c2526255561f4986c82ca00dba3ebc057966b62d18d5300a00c4d2ad300		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AB 6160 bytes

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