Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c9865b80b2b08e0…

MALICIOUS

PDF

41.0 KB Created: 2020-03-18 14:47:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9260ddde24d97af9f25ed9e5c151ba91 SHA-1: 8c922c6c897140152c73bcf7afd684e3190b6187 SHA-256: 4c9865b80b2b08e0f73e45cb2f67349851c28a438f9f41f5a0f922877420c91f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files hosted on unrelated domains. This behavior is indicative of a link farm or a redirection scheme designed to obscure the ultimate destination. The document body, though heavily obfuscated, contains a URL that appears to be part of this network. The primary goal seems to be directing users to a collection of SEO-optimized PDF documents, likely as a prelude to a more malicious payload or phishing attempt.

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://rehphotography.org/uploads/1/3/0/4/130489006/130489006.html#breakdown+drills+for+5+out+motion+offense
    • http://kathrynjacksonart.com/uploads/1/3/0/6/130621191/4da72332.pdf
    • http://clabsi.com/uploads/1/3/0/8/130814645/powujupajaxez.pdf
    • http://www.larazgourmet.com/uploads/1/3/0/7/130776801/gavugitiloxav.pdf
    • http://christianoutreachministry.net/uploads/1/3/0/6/130604548/vovapuxulutej.pdf
    • http://soviet-shrek.com/uploads/1/3/0/5/130550778/4460210.pdf
    • http://jssecuritysolutions.com/uploads/1/3/0/9/130969247/fuvugopolufaf.pdf
    • http://www.crankysuptown.com/uploads/1/3/0/2/130270938/dadagoz.pdf
    • http://scrumdayvietnam.net/uploads/1/3/0/8/130874082/6761446.pdf
    • http://wikiemt.com/uploads/1/3/0/5/130589216/c9213217c7707c.pdf
    • http://therapyprana.com/uploads/1/3/0/8/130813973/pebadakufamaj_nuvupusepevepom_mupib_jipupamaju.pdf
    • http://arcatalandscaper.com/uploads/1/3/0/7/130775395/zomib.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_off00007836.bin
81f2131fa31868454fa01b80209b5b611facc01fc66e4c6ff6a1395c2dad4377		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7836 7952 bytes

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