Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b389be703f23c93…

MALICIOUS

PDF

48.6 KB Created: 2020-08-01 21:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 054f4f45a0f50523066bf12977679305 SHA-1: eb77b32e79b08b2ee1eca1e543313ebbe9b59b68 SHA-256: 8b389be703f23c93aebe57b7898703655965afefb198b738f26b0ad21fa4fa65
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). The document body, though heavily obfuscated, contains references to the redirector URL and several Shopify-hosted PDF files. This suggests a link farm or redirection scheme designed to lead users to malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=cheapname+custom+domain+for+github
    • http://files.westfieldhighschoolgirlsicehockey.com/uploads/1/3/1/3/131398139/258ec0e44c.pdf
    • http://files.beachbungalow19.com/uploads/1/3/1/4/131438641/dezekurawaxobal.pdf
    • http://files.hollenbecksclass.com/uploads/1/3/0/7/130739063/jewewudupu.pdf
    • http://files.mindswan.com/uploads/1/3/1/0/131070508/5615321.pdf
    • http://files.jeansbeetle.com/uploads/1/3/2/7/132740584/12dcc73c5a3eefa.pdf
    • https://cdn.shopify.com/s/files/1/0439/9605/3662/files/34795098981.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/61288636312.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/94210681666.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/xegawewojovevegago.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/zuzisexevofujuve.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/58531656239.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/lokekuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6787/5228/files/fewizezex.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/bisebixemobov.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/43364197287.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunizededalusabunis.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/25262645683.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/59849623617.pdf
    • https://cdn.shopify.com/s/files/1/0434/9027/9574/files/6775674910.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000652b.bin
03709723142e8a0e5779479d45b887cc743aa59b21e457ce05c96c9765e00752		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652B 5584 bytes
font_01_sfnt_off000077e8.bin
dd1c0d0f4c4d497197f89a70af652e8df89058bf81fee1dc90169ec4afbf4d4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E8 2468 bytes
font_02_sfnt_off00008318.bin
84f4730a9a70461e6defed534269bffb208d14886fa9e7592f7ab100e40238eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8318 10340 bytes
font_03_sfnt_off0000a687.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA687 4324 bytes

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