Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ae40118040f974…

MALICIOUS

PDF

36.5 KB Created: 2020-04-06 06:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a5ebe2c2af073ff6b685afe412c845d2 SHA-1: ce9ae44086ef91161b32dafd4f7206e34ac48a03 SHA-256: 30ae40118040f97451477184b282fd04e9d8a7642edb2601eb921bb758caff1e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML_NYX_PDF_MALICIOUS heuristic also strongly indicates malicious intent. The document body, though partially corrupted, contains some of these URLs, suggesting the primary purpose is to lure users to these external resources. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://goradiocristosalva.org/uploads/1/3/1/4/131483378/131483378.html#ranurado+de+forma+en+fresadora
    • http://worldquestlive.com/uploads/1/3/1/3/131380295/bizemaja.pdf
    • http://bookcashfast.com/uploads/1/3/0/7/130775862/80f77bc2b.pdf
    • http://lessons4life101.com/uploads/1/3/1/3/131381677/6b367.pdf
    • http://ssautomotive.org/uploads/1/3/1/3/131384709/ddbb23.pdf
    • http://mancavemountain.com/uploads/1/3/1/0/131069935/2744933.pdf
    • http://sparklingcleanmaids.net/uploads/1/3/0/5/130543848/bawadiranikaxujuvo.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_off000066d1.bin
c0bc6fed4a65afb007f4545cb00f48e54c9fa666d0018dab410948daf31acb87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 8024 bytes

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