Malicious PDF — malware analysis report

Static analysis result for SHA-256 954817f2d6f7d354…

MALICIOUS

PDF

55.1 KB Created: 2020-08-07 00:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 955682404b08691e5d95e3f193e1a209 SHA-1: c8085a57570c40121f1e50e2e3a82183686c6fa9 SHA-256: 954817f2d6f7d354507041f263f4623d2a69208e7617d418abd3d558a53b5fc1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=ableitung+%25C3%25BCbungen+pdf, which is a critical indicator of malicious intent. This suggests the document is designed to redirect users to malicious content through a link farm.

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=ableitung+%25C3%25BCbungen+pdf
    • http://files.blacklicoriceweddings.com/uploads/1/3/0/9/130968943/wiluxofumebi_povatidepegal_dokimukig_mawub.pdf
    • http://files.grinnellcecbucketcourses.org/uploads/1/3/0/7/130775108/8469246f76.pdf
    • http://files.wipeerrunorganizations.org/uploads/1/3/1/0/131070207/2762073.pdf
    • http://files.jessiejewelsart.com/uploads/1/3/1/3/131398507/fdc1d42fe58382.pdf
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/xerotobesesuvalotugi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/94035047593.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/metodos_y_tecnicas_de_investigacion_en_psicologia_clinica.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/brand_awareness_articles.pdf
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/85955833864.pdf
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/57911055783.pdf
    • https://cdn.shopify.com/s/files/1/0431/6879/2733/files/33328608240.pdf
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/74284032366.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/498268715.pdf
    • https://cdn.shopify.com/s/files/1/0432/7214/3001/files/vobizarosu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/95307291125.pdf
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/10982863924.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_off00008df1.bin
e1e802f0e05dc365c3a8fd7127826ed348ff8b13134930379db914562dba8f18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF1 4972 bytes
font_01_sfnt_off00009ec1.bin
ff88544393b601a05949da06d20caa8208a8b9f20d87bc280831e525fd1ff483		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC1 14996 bytes

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