Malicious PDF — malware analysis report

Static analysis result for SHA-256 8974d90d73357723…

MALICIOUS

PDF

32.1 KB Created: 2020-05-28 02:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d1ea6a32839639c43cc4ae6954b65fc SHA-1: f14b31caf5d2a2d96ef1e60ef3bf5c7599f735e4 SHA-256: 8974d90d73357723895dddb82943c05d42b0d22ffaa5dcc2a2b9aa5d605446c3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm. The document body contains garbled text but also includes the title 'Estadistica en los negocios ken blac' and references to wkhtmltopdf, suggesting it was generated programmatically. The primary attack pattern appears to be the creation of a link farm, likely to manipulate search engine rankings or distribute further malicious content.

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://alchemycorals.com/uploads/1/3/0/6/130639453/130639453.html#estadistica+en+los+negocios+ken+blac
    • http://themusicdepotcanada.com/uploads/1/3/0/5/130543468/6461427.pdf
    • http://erictharris.com/uploads/1/3/0/7/130776485/noguzijexixotumem.pdf
    • http://beatysoberhouse.com/uploads/1/3/1/4/131407021/bamefujuduvarelites.pdf
    • http://wecleaneverything.org/uploads/1/3/0/2/130288762/dadigi_gazop_xomudufob_walilatujodumar.pdf
    • http://sidelogic.net/uploads/1/3/1/6/131637780/bavawolidipir.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_off0000500a.bin
e5369c872fbbde42f84f8bae2cdd2747b0a95c831e2cf8504c3e424aa9336924		 pdf-font-stream PDF embedded font (sfnt) at offset 0x500A 11040 bytes

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