Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed503e981a633707…

MALICIOUS

PDF

37.6 KB Created: 2020-04-14 03:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6c8e69c227a9b3ef692ff6ae9dcc9117 SHA-1: 2838a0eb9fba572aae60993142f4ee5e7c10854e SHA-256: ed503e981a6337074b6723b3480408911c6715bc64f3c15fadf3eb67a684d4ec
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 numerically or generically named PDF files hosted on various domains. This pattern is indicative of a link farm designed to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains text related to 'Gsk pharma india annual report' and the wkhtmltopdf application, suggesting a lure to disguise the malicious intent. The primary heuristic firing indicates a 'PDF_SEO_LINK_FARM' which strongly suggests the document's purpose is to redirect users to potentially harmful external sites.

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://divetogo.net/uploads/1/3/0/9/130969946/130969946.html#gsk+pharma+india+annual+report
    • http://ioimpresa.net/uploads/1/3/1/3/131382395/8371445.pdf
    • http://brigidcoady.com/uploads/1/3/0/6/130605517/sokibakuxibizemonu.pdf
    • http://propetum.fi/uploads/1/3/0/5/130539325/joxafem.pdf
    • http://resolutiongroup.org/uploads/1/3/0/6/130604640/6811422.pdf
    • http://angieglamesthetician.com/uploads/1/3/0/6/130621988/731500.pdf
    • http://lifeinasimulation.com/uploads/1/3/0/5/130550797/8232291.pdf
    • http://blueridgeparkwaymotorcycletours.com/uploads/1/3/1/3/131383921/wavipivigimi_zetuxax.pdf
    • http://darnellduoattentivecaring.com/uploads/1/3/0/4/130477584/dawowid.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_off00006b5a.bin
36f8c23eee42f568ce86b4bc0935cf2b966f08f65b1b6f619a6fc95a3998c91a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5A 8072 bytes

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