Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e24bdd4f5b99873…

MALICIOUS

PDF

28.9 KB Created: 2020-04-11 08:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 764c91b998431fb56e912e6ef0ea8865 SHA-1: 0c658dff4a78a0eef7aad479d121b13394c0c114 SHA-256: 9e24bdd4f5b998738efa5c66562ae1f891c2f3c0a291f8374aceec7bfb982f81
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 PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body, though heavily obfuscated, contains some of these URLs, reinforcing the link farm attack pattern. No scripts were extracted from this sample.

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://mta-sts.mx.grandsalinelibrary.com/uploads/1/3/0/6/130620572/130620572.html#performance+ford+lincoln+bountiful
    • http://deborahmolsberry.com/uploads/1/3/0/2/130271113/e885dfd2e.pdf
    • http://hottbobs.info/uploads/1/3/0/6/130639609/suvobagika.pdf
    • http://thewritingrocks.com/uploads/1/3/1/4/131437725/27e00e7e0aa4.pdf
    • http://woodyhotels.com/uploads/1/3/0/2/130289340/nirifegazulovas.pdf
    • http://jhrpropertyltd.com/uploads/1/3/0/7/130775403/bizosovejagufugo.pdf
    • http://apexppt.com/uploads/1/3/0/8/130813997/zigivirafun.pdf
    • http://arlinex.com/uploads/1/3/0/5/130588913/9533813.pdf
    • http://fakartstore.net/uploads/1/3/0/6/130621153/garapuminaja.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004edb.bin
3ffb5f2c7da2f0d6ac8712d405e7ceec6590d02351f5511dd62885c49de4ad1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDB 7616 bytes

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