Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74834efcbccaeb5…

MALICIOUS

PDF

37.6 KB Created: 2020-04-05 03:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6f937c6546f4bc291550f06565c16a70 SHA-1: 962d378d5d9f938b2d8d3ee228bd0c8bf9ab7fa3 SHA-256: d74834efcbccaeb5b9d8fa196b67597b2c5fc435af5d92bd15123d028f00207c
62 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The document body, though partially corrupted, suggests a lure related to an essay on global warming. The presence of a PDF_SEO_LINK_FARM heuristic firing further supports the assessment of a link farm or redirection scheme. No scripts were extracted, limiting the ability to determine further malicious actions.

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://hattitudeproductions.com/uploads/1/3/0/4/130476200/130476200.html#ejemplo+de+ensayo+argumentativo+sobre+el+calentamiento+global
    • http://boydclass.net/uploads/1/3/0/5/130545681/1221550.pdf
    • http://myersmindset.com/uploads/1/3/0/2/130289732/1645566.pdf
    • http://myantelopeconews.com/uploads/1/3/0/6/130604126/figedin.pdf
    • http://mail.thespiritbutterfly.com/uploads/1/3/0/6/130604615/059c9556ea.pdf
    • http://the-homeservice-pros.com/uploads/1/3/0/5/130589095/925c8353bf6797.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_off000066ca.bin
a1823c663ae053c865f7d1ec632efc4c8641ab10a1a8cf807dd71edf9487897f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66CA 9184 bytes

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