Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf63b3d3bde6478…

MALICIOUS

PDF

26.7 KB Created: 2020-05-01 15:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 85549880f90b5f5b7ec4aeebd85d4894 SHA-1: 7fe17139d2cc8110c3db5432ca09703facc92868 SHA-256: baf63b3d3bde647836e2b647e77a12cf2cea7dc9926ce18ed7e408b421c33006
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 primary external URL found is http://craniosacralnashville.com/uploads/1/3/1/1/131164252/131164252.html#black+lip+bastard+instrumental. No scripts were extracted from this sample, and the document body is heavily obfuscated, making it difficult to determine the exact nature of the payload beyond the link farm activity.

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://craniosacralnashville.com/uploads/1/3/1/1/131164252/131164252.html#black+lip+bastard+instrumental
    • http://compass4kidz.com/uploads/1/3/0/3/130379380/b9f25da451.pdf
    • http://marriagetoolbelt.net/uploads/1/3/1/6/131636642/1080217.pdf
    • http://coryeamasonry.com/uploads/1/3/0/7/130776073/zikogorovazapir-kelif.pdf
    • http://gimeproductions.com/uploads/1/3/0/5/130550711/6e09f11c920.pdf
    • http://signaturevacations.org/uploads/1/3/1/8/131856935/4873305.pdf
    • http://gigihudsonvalleygiftcard.com/uploads/1/3/0/4/130435982/jovizalafam.pdf
    • http://mamasmilkbox.com/uploads/1/3/1/8/131856283/3fc7277e02.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_off000040d9.bin
d97aa92152c9c4d4124557b694ba5602585b79d3b4cdd01f8cf0e7f8da0b2796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40D9 7508 bytes

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