Malicious PDF — malware analysis report

Static analysis result for SHA-256 5152b1112d35776e…

MALICIOUS

PDF

29.7 KB Created: 2020-04-12 03:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 45d13b75459b077a498b59f9c73a5220 SHA-1: cefa64f2b1314b5ff9b9357794d6ea32aee33918 SHA-256: 5152b1112d35776ee8189e5f035bf5616f720294a43292c14206c2df6b12fe29
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 to various domains, a technique often used for SEO spam or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to drive traffic to a network of sites. While no scripts were extracted, the sheer volume of outbound links suggests a malicious intent to redirect the user to potentially harmful content.

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://impact-active.com/uploads/1/3/1/4/131437848/131437848.html#integral+definida+e+indefinida
    • http://themercuriogallery.com/uploads/1/3/0/6/130604201/kudex.pdf
    • http://myamazonuk.com/uploads/1/3/0/7/130739530/41828b57518.pdf
    • http://restaurant-loudun.com/uploads/1/3/0/6/130621026/vepusuxizara.pdf
    • http://pennsylvaniawritingservices.com/uploads/1/3/1/4/131438130/9153067.pdf
    • http://danapalmer.org/uploads/1/3/0/7/130740438/b475d.pdf
    • http://renegade4christ.com/uploads/1/3/0/5/130542727/bifije-lesex-nowub-zefaban.pdf
    • http://differme.com/uploads/1/3/0/7/130775606/mofem.pdf
    • http://amandajgordon.co.uk/uploads/1/3/1/4/131410158/9f58a4001830.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_off00004c29.bin
699a2703d65ab5e43d51327d00ef48a375ba8690ad2a30671102eaacdf4889b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C29 7856 bytes

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