Malicious PDF — malware analysis report

Static analysis result for SHA-256 517aa5e0f9473b0e…

MALICIOUS

PDF

27.0 KB Created: 2020-04-10 04:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8888c3459c6dc78590fe09dc79f965d3 SHA-1: bd0f218de7d632f9b4fd5aad1a1c8aa258613b31 SHA-256: 517aa5e0f9473b0ed32b8327344c6c5c91588de4377d8a951a203a682a182e68
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text, though partially corrupted, includes a URL that appears to be a lure for technical information. This suggests a link farm or SEO spam campaign, potentially leading to malicious content or phishing pages. No scripts were extracted from this sample, limiting the ability to determine further malicious actions.

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://colorful-clarity.com/uploads/1/3/0/7/130738915/130738915.html#como+eliminar+un+elemento+de+un+arreglo+en+javascript
    • http://lmpparalegalservices.com/uploads/1/3/1/4/131405940/gamibukobatelopaz.pdf
    • http://vorvia.com/uploads/1/3/1/3/131382907/5374259.pdf
    • http://shs1977.com/uploads/1/3/0/6/130604877/d1815e18747c8c.pdf
    • http://kekomar.com/uploads/1/3/0/4/130476751/1643643.pdf
    • http://brookylnpinchuck.com/uploads/1/3/0/5/130538869/4049281.pdf
    • http://mydrivecash.com/uploads/1/3/0/3/130324315/nurosak-lupokopejejit.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_off00004592.bin
6fe932e7dfe2b47bf962b75e9de1178aab050014711cef9079001e934d4d8272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4592 6132 bytes

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