Malicious PDF — malware analysis report

Static analysis result for SHA-256 33111b0e2519220f…

MALICIOUS

PDF

34.8 KB Created: 2020-05-20 02:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d270c4b55394e4477f05df299ca32f SHA-1: e98d3b0a518cb81869355a84c2e36496496a6f6a SHA-256: 33111b0e2519220fc60ac67d96ae591a746f97f8b0ff70545815c1553cad2bb6
62 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 other PDF files hosted on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content. The document body, though heavily obfuscated, contains URLs that appear to be lures for software downloads, such as 'Corel draw x5 free download offline'. No scripts were extracted from this sample, limiting the ability to determine specific execution chains.

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://jtjeepsales.com/uploads/1/3/0/7/130775292/130775292.html#corel+draw+x5+free+download+offline
    • http://kombinasjon.no/uploads/1/3/0/2/130273623/91cd5527.pdf
    • http://rockieglass.com/uploads/1/3/1/4/131408100/b4799a5f0ba.pdf
    • http://djlastminute.info/uploads/1/3/0/5/130545816/kakajaledarox_bujamipewop.pdf
    • http://healthforhomeschoolers.com/uploads/1/3/1/4/131453688/628438.pdf
    • http://keystonetaildraggers.com/uploads/1/3/0/6/130604667/wafepazapafamek-gonume-kimaz.pdf
    • http://myparty-rentals.com/uploads/1/3/0/5/130551401/nokidifuwovi.pdf
    • http://finnbjornerud.com/uploads/1/3/1/4/131437920/tovogugigazivonite.pdf
    • http://karlaakehurstart.com/uploads/1/3/0/6/130620690/navirem-garomituxu-suwesukuleken.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_off00005c8c.bin
59b7a6a2ed335abb796a38d03dbb3be1e46ccac25e847a9bccddaaed4b25ea45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8C 10416 bytes

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