Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f46dc08f842dc1…

MALICIOUS

PDF

82.2 KB Created: 2020-04-13 23:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bb0ab0b6725b257987efc7be4ffd1f4a SHA-1: f8b7c64684d963fa5933e495dae816611c31556e SHA-256: 73f46dc08f842dc1eef2dbda7797dc49b5b4b73a6ea934bf7876d7be0919715f
92 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 documents hosted on various domains. This indicates a link farm or redirection strategy. The primary URL http://sd50dfl.net/uploads/1/3/1/3/131383928/131383928.html#wrapping+sheet+metal+around+wood appears to be a lure, while the other linked PDFs likely serve as further stages of the attack. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://sd50dfl.net/uploads/1/3/1/3/131383928/131383928.html#wrapping+sheet+metal+around+wood
    • http://bestinterestof.com/uploads/1/3/0/5/130590305/monutev_xikoboxi_tuzatu.pdf
    • http://ginausedheavyequipmentsales.com/uploads/1/3/1/4/131437233/59db1067b14f2.pdf
    • http://thefeedingfamily.com/uploads/1/3/1/4/131408567/genedadibuxalizifuba.pdf
    • http://cherists.com/uploads/1/3/0/2/130291471/16dc3acacca9d51.pdf
    • http://boujiebsboutique.shop/uploads/1/3/0/8/130814706/jabetetonok_datikag.pdf
    • http://falegnameriaprontointervento.com/uploads/1/3/0/4/130488543/1749163.pdf
    • http://jardinsetservices.com/uploads/1/3/0/9/130969057/5aba47908fc.pdf
    • http://jamesfoth.com/uploads/1/3/1/3/131379749/zinebiniwu.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_off00011b24.bin
59ddb24d386d81978c8c5c55a6a3f9e210e721f183187a832bde5a1e2d682c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B24 8844 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.