Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ff4cd3713e6a47…

MALICIOUS

PDF

32.2 KB Created: 2020-05-31 01:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0099925fb6c8cef5d94ef63d27b1b543 SHA-1: 915acf9b0f9ad16c7012d102a09c409b1aaba0a1 SHA-256: c1ff4cd3713e6a47337a5213ae159f426b56575979ea874caf4d90a64ed7363d
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to various domains, a technique often used for SEO poisoning or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. The document body's fragmented text and the presence of URLs suggest a lure to external, potentially malicious, resources. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://blesscedbeads.com/uploads/1/3/0/9/130969910/130969910.html#can+i+download+java+edition+if+i+bou
    • http://danycgsr.org/uploads/1/3/0/8/130874169/tewigunivadugi.pdf
    • http://mountaingalsbookkeeping.com/uploads/1/3/0/6/130621250/3c7294.pdf
    • http://pioneerwinelouisiana.com/uploads/1/3/0/6/130639675/aff85b4a42548.pdf
    • http://bosselitehockey.com/uploads/1/3/0/7/130776535/danotiwuzub.pdf
    • http://katriinaspa.fi/uploads/1/3/0/6/130604195/2119567.pdf
    • http://uburology.com/uploads/1/3/1/4/131453150/rejaguru_rosapono_wowurevug_wojonagum.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052b1.bin
e20fd042e32bfb868793563bb475776f6d5aa4a6195085c3f4546de2aa1f7877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B1 10328 bytes

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