Malicious PDF — malware analysis report

Static analysis result for SHA-256 53908f3b5c498c2d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 18:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 560765cbaf65b075800f2795090d3a32 SHA-1: c57a3734ef84a005a6fec903a8e5bfb044751573 SHA-256: 53908f3b5c498c2db593c062494193fa531da00abc096413ed36bdc80c2d9707
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=fill+in+calendar+template+word'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but point to external PDF files, suggesting an attempt to manipulate search engine results or distribute content. No scripts were extracted from this sample.

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=fill+in+calendar+template+word
    • http://files.bravotouch1.com/uploads/1/3/1/6/131637529/janadoxulazaxe-wibimozuwima-nuluge.pdf
    • http://lapisuw.papayabranchboutique.com/uploads/1/3/2/6/132682663/6562256.pdf
    • http://files.birthto5partnerships.org/uploads/1/3/0/7/130775350/jobezomesabir.pdf
    • http://dizow.xtorch.org/uploads/1/3/1/3/131384575/galurosenivatinonab.pdf
    • http://files.imaniyako.org/uploads/1/3/0/7/130738892/dupijav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3643/files/42095709994.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/vibefidevomotezogu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/vojixuvemuxose.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/19246939002.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/sepsis_guidelines_2020_jama.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/vinevikupob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/nemugugegibabez.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_off0000618a.bin
fc7b7ab74dc7dc05c0f7c1da2822a8e5e7c0b91957d9782e2de1abb76b0e0869		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 5088 bytes
font_01_sfnt_off000072c3.bin
c3a2e778a4af5bd16ea2bdfa377c5582d2116b5e262e87997b9a609f39787c7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 10172 bytes

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