Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0fb16ee742f77e…

MALICIOUS

PDF

32.0 KB Created: 2020-05-21 07:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f7b805a7b66210b4f1ab3fe0dfb7e27 SHA-1: 02e5147064ee8d30a133979f88d4b793ce135b6a SHA-256: fe0fb16ee742f77ef81dd20d46652d9f8766dfb3b3f14db8b909da54dda54d91
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 are dynamically generated and point to PDF files on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content. The document body, though partially corrupted, contains text related to 'connect the dots printables' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. No scripts were extracted, and the primary malicious activity appears to be directing users to potentially harmful external 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://estenebauen.com/uploads/1/3/2/3/132302993/132302993.html#connect+the+dots+printables+1-100
    • http://superherorunmwc.org/uploads/1/3/0/6/130639385/kelupigigo.pdf
    • http://absolutetanningsalon.com/uploads/1/3/0/2/130272355/8538267.pdf
    • http://runciblespoonjam.com/uploads/1/3/0/3/130313729/5985608.pdf
    • http://rjpropertiesgroup.com/uploads/1/3/0/6/130621132/0c1a0551ab.pdf
    • http://tradergamer.com/uploads/1/3/0/5/130540585/naxenijovumig_remuwokemab.pdf
    • http://fenixholdingsa.com/uploads/1/3/0/3/130323566/gopaj.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_off000054d7.bin
66d7a90b8c0ee4fbadd9d329ac35f21fdf0fced3dd7a1518b6e7c498a889eb31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54D7 9564 bytes

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