Malicious PDF — malware analysis report

Static analysis result for SHA-256 d517c12f679f760b…

MALICIOUS

PDF

53.0 KB Created: 2020-07-24 08:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80152b995407bd415794b331922ae467 SHA-1: 4a2285c79c3604ddefcbb8d2c6cbfbb28429fa3e SHA-256: d517c12f679f760b7516806c8e374bc3712c79fc82934c180ea67443cbd1c7cb
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. Additionally, it hosts a large number of SEO-optimized PDF links, many pointing to external sites, suggesting a link farm or content manipulation tactic. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the idea of a web-based lure.

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/wb?keyword=manual%20hand%20pump%20water%20well
    • http://files.taghmonns.com/uploads/1/3/0/7/130775228/4743028.pdf
    • http://files.abasistuff.com/uploads/1/3/1/1/131164383/bupulapexu_wasat_sazowopetiraded_nejidisugoxu.pdf
    • http://files.stlvacancy.com/uploads/1/3/2/7/132740253/5038402.pdf
    • http://files.myartyouwearjewelry.com/uploads/1/3/1/4/131453539/kukuxubuv-lugarugixarafod-vabojudu-wadonuzuzu.pdf
    • http://files.mariposaband.com/uploads/1/3/1/6/131636914/6233857.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/5828649586.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/goriverati.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20807514836.pdf
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/fagenadadojofesanuwibabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/pevulipexem.pdf
    • https://cdn.shopify.com/s/files/1/0428/7053/8406/files/31251288460.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/48884525796.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/giboduzid.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/41177047113.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/mepeni.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_off000092d6.bin
80ddd5a9a8a2ffcf40458dca6d7222cecfe39df8bbfc856052e8c92059c32dda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92D6 4840 bytes
font_01_sfnt_off0000a31d.bin
07a5dc929405bc5aba1429b634906c045719a0ccf0b0862e3c17af4cf7be7999		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA31D 10564 bytes

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