Malicious PDF — malware analysis report

Static analysis result for SHA-256 d637ed0753ae8d96…

MALICIOUS

PDF

37.3 KB Created: 2020-04-13 00:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8e6aa523098c26378c387db007b3cc0b SHA-1: 42b726815f5abcc827796fc1557887ea3a1553cc SHA-256: d637ed0753ae8d962e0cda3a3e713807d38d8b4a4cee4f6e98da99db3b3e2cf3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to domains that appear to be part of an SEO link farm. The document body, though partially corrupted, contains terms like 'Deshidratador solar semi industrial' which are likely used to attract search engine traffic. The presence of numerous unknown URLs suggests a malicious intent to redirect users to potentially harmful sites.

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://lewisinsuranceinc.com/uploads/1/3/0/9/130969656/130969656.html#deshidratador+solar+semi+industrial
    • http://416america.com/uploads/1/3/0/8/130874239/18ae8.pdf
    • http://ensurd.com/uploads/1/3/0/6/130639259/zeludekexof.pdf
    • http://apodera.org/uploads/1/3/0/8/130874639/gewafiviwixexo_baduduwez_nubikexoferuto_wipuzo.pdf
    • http://boatandbarn.shop/uploads/1/3/0/6/130603709/2821564.pdf
    • http://halfdollarhorror.com/uploads/1/3/0/5/130551472/wigikunifemovanarag.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e7.bin
1585e1204cee250a98a0f027517a424ff677371bc55c60cddbd6be0c51805520		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E7 9072 bytes
font_01_sfnt_off00007a29.bin
0a8651204712d77b3df8786b20c09d46779fa8f6890d30c9d9c12e9401afa574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A29 4152 bytes

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