Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5668f39715b0027…

MALICIOUS

PDF

31.6 KB Created: 2020-05-18 13:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600e6fd9cf9dc78234375f40b18603cd SHA-1: f916b19718e094451950565f854c316af716dfae SHA-256: f5668f39715b0027b86116026b6853d3a358f4c2d246953dc4997bd54a286c22
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 to various domains, identified by the PDF_SEO_LINK_FARM heuristic. These links point to PDF files with numeric or generic slugs, suggesting a link farm or SEO manipulation tactic. The document body contains text related to vaccination centers, likely a lure to encourage users to click the embedded links. The primary intent appears to be directing users to a network of external PDF 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://cprtherapycenter.com/uploads/1/3/0/5/130589309/130589309.html#centre+de+vaccination+amiens
    • http://garycedeira.com/uploads/1/3/0/2/130289235/7080495.pdf
    • http://coastalzephyr.com/uploads/1/3/0/2/130289535/bilobamebat_niripesalu_vupojodunaragi_tefigepiridus.pdf
    • http://racefortheheart.net/uploads/1/3/0/5/130543368/27fb636be6f1.pdf
    • http://junkmarketgypsy.com/uploads/1/3/1/3/131379262/dubaju.pdf
    • http://lakeviewseries.com/uploads/1/3/0/7/130776356/walupemamosadixane.pdf
    • http://southadamssquare.com/uploads/1/3/1/4/131437420/1696516.pdf
    • http://cicalcyc.com/uploads/1/3/0/6/130620470/5194724.pdf
    • http://thompsonholdingsllc.com/uploads/1/3/1/8/131856103/ririsona.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_off00004ec1.bin
3f1ee508b17be7e7b07b37a74374f466b84d850d6059c92de7f224d3942835ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC1 10828 bytes

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