Malicious PDF — malware analysis report

Static analysis result for SHA-256 4500b4da757ca4fd…

MALICIOUS

PDF

34.2 KB Created: 2020-04-30 05:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5916d57b4d898398b6fcc404c334ed7f SHA-1: 1087f2ae352fc7c2ff11f036e6f82b6989230e63 SHA-256: 4500b4da757ca4fde9eb716cf823703badb497c106e7d478af7e649b9610aa4d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution point for further malicious activity. The embedded URL 'http://carethem.org/uploads/1/3/0/6/130603709/130603709.html#get+out+trailer' is also a notable IOC. The lack of executable scripts or exploitable content within the PDF itself suggests its primary function is to redirect users to these external resources.

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://carethem.org/uploads/1/3/0/6/130603709/130603709.html#get+out+trailer
    • http://foxvalleyirishcommittee.org/uploads/1/3/0/7/130739026/kegurajupezejivovi.pdf
    • http://angeliquedeclercq.be/uploads/1/3/0/5/130588153/2e171.pdf
    • http://sunsetsailkeywest.co/uploads/1/3/1/4/131437357/xabula-fusilagare-semutesanerisa.pdf
    • http://scandic.nz/uploads/1/3/0/2/130272084/9621957.pdf
    • http://edgehealthpartners.org/uploads/1/3/1/4/131407849/8595706.pdf
    • http://ldjsnational.com/uploads/1/3/1/6/131637074/759d1195ba054.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_off00005c80.bin
239769c7e5e093e588b5d8d7c157421581c2ff0fc3f37b9ce4f958f5aa02ca64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C80 8584 bytes

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