Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a91642a11f47caf…

MALICIOUS

PDF

48.8 KB Created: 2020-04-13 03:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 780bd7c58ce11da94a63297484a7a13e SHA-1: a93f6387b40bb00ae7023293d9872fe81060a88e SHA-256: 2a91642a11f47cafb6592c599e9d0294a8d084e75d030ea49090ba8c16b941ce
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains text related to 'Clasificacion de textos no literarios y sus caracteristicas' and includes a URL that appears to be part of this link farm. The primary intent appears to be directing users to a network of potentially malicious or spam-related websites.

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://neokundalini.org/uploads/1/3/0/7/130776810/130776810.html#clasificacion+de+textos+no+literarios+y+sus+caracteristicas
    • http://prefabflats.com/uploads/1/3/0/4/130475973/noromapoxip.pdf
    • http://dewine.co/uploads/1/3/1/4/131437742/8916269.pdf
    • http://remondbeylonsupmael.com/uploads/1/3/0/5/130550688/jefugiju_vujunuvafewu_bemagupabib_gurex.pdf
    • http://charmaccents.com/uploads/1/3/0/5/130539496/814636.pdf
    • http://epiplas.com/uploads/1/3/1/1/131163774/7029741.pdf
    • http://lindengld.com/uploads/1/3/1/4/131455680/pinawelinesiwi.pdf
    • http://biggon40.com/uploads/1/3/0/7/130776514/9ec5fd5b.pdf
    • http://aestheticsofleadership.com/uploads/1/3/0/6/130603894/674576.pdf
    • http://causesupport.space/uploads/1/3/0/6/130639574/796412.pdf
    • http://geminimynd.com/uploads/1/3/0/7/130776783/pobogowevedab.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_off0000937b.bin
46b6df24e9520629ceefa239393bc9fc7e67e6c389e79c83900ff8db803fae9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x937B 9340 bytes

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