Malicious PDF — malware analysis report

Static analysis result for SHA-256 5050e703a56c9a93…

MALICIOUS

PDF

27.7 KB Created: 2020-04-04 10:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d28d61d1ca3d6b2f2c39edc98990469 SHA-1: c0437678c12030b13a88595755591101f459d558 SHA-256: 5050e703a56c9a93e14d779960f19b1ecd9b1735f885c4e68d35e66ef971e593
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to domains that appear to be part of a link farm. The document body contains the text 'Cuales son los divisores de 1813', which is likely a lure to attract search engine traffic. The heuristic 'PDF_SEO_LINK_FARM' indicates a high concentration of external links, suggesting a malicious intent to redirect users to potentially harmful websites. No scripts were extracted from this sample.

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://msb-art-integration.com/uploads/1/3/1/0/131070213/131070213.html#cuales+son+los+divisores+de+1813
    • http://nutramin.be/uploads/1/3/1/1/131163563/f24e3d65c13ef.pdf
    • http://alishahilde.com/uploads/1/3/0/9/130968926/titisoxapimeka.pdf
    • http://lcnonmedicaltransport.com/uploads/1/3/0/7/130775274/6817257b0c5cc3.pdf
    • http://momnovel.com/uploads/1/3/0/7/130776164/femefi.pdf
    • http://mercyinguyana.org/uploads/1/3/1/0/131070572/7351829.pdf
    • http://capt1926.com/uploads/1/3/1/0/131070441/papuvofuvimuda-notesudopenikan.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_off00004738.bin
8e926c4ae49c3369760ca562f163366416a789ace3e3baebe9272c6f41b05e9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4738 6704 bytes

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