Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec8c683781714e09…

MALICIOUS

PDF

38.9 KB Created: 2020-05-20 04:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71b66b584bca9525c5778ccc83b82df5 SHA-1: 12b3e7c537ba3477a870b850067600b70e37ddf8 SHA-256: ec8c683781714e09d637cf0362ce1a869ddf36bcf95fbbb098c03354055cace6
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution network. The document body contains garbled text and the authoring application, but the primary malicious activity appears to be the mass embedding of URLs. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://inbestiapro.com/uploads/1/3/0/3/130323116/130323116.html#unique+saint+names
    • http://uinivest.com/uploads/1/3/0/4/130483909/d83286d14c91.pdf
    • http://athleticteamspirit.com/uploads/1/3/0/5/130588547/8df850df9a.pdf
    • http://moodmetals.com/uploads/1/3/0/5/130550752/46ce37.pdf
    • http://miyako-watanabe.de/uploads/1/3/0/2/130274371/075ac218.pdf
    • http://stratifi.co/uploads/1/3/0/2/130273766/mirabalowin_pamila_xabidijilot_zezajagufokire.pdf
    • http://summitcapitalco.com/uploads/1/3/1/3/131398374/dosamivenomokuwilow.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_off00006a15.bin
5158854a701ffc6feb3b31b44b4dc040a1d281f9fd67bf37618f9484e8f26d07
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A15 11576 bytes